A split system heat pump capacitor helps start or run compressor and fan motors, but the replacement must match the rating and configuration specified for your unit. My best overall pick is the FOCSPROD 60+5 µF dual-run capacitor for its combined compressor and fan ratings and broad heat-pump fit. The MARS 35+5 µF is a more established-brand option for systems calling for that exact rating, while the Rheem 60+3 µF OEM part suits buyers matching a Rheem replacement number. The main tradeoff is choosing a dual-run part versus a single-run capacitor, then matching capacitance, voltage, shape, and terminals to the unit label. Read on for the full comparison and selection guidance.
Get backup power and energy gear delivered free — and shop member deals
- Fast, free delivery on millions of items
- Access to Prime Big Deal Days deals on October 6–7
- Prime Video, Amazon Music and more included
Key Takeaways
- Capacitance rating separates these picks more than brand: the lineup spans dual-run ratings from 30+5 µF to 80+5 µF, plus standalone 60 µF and 7.5 µF options.
- FOCSPROD 60+5 µF is the broad-fit pick: it combines compressor and fan ratings and is described for heat pumps, but it only fits units specifying 60+5 µF.
- The Rheem 60+3 µF OEM part is a model-specific choice: its 3 µF fan rating differs from the more common 5 µF options listed here.
- Single-run capacitors serve a different job: BOJACK‘s 60 µF and 7.5 µF models should not be treated as substitutes for dual-run parts.
- Voltage and physical fit still need checking: several options list 370/440V or 370/450V, while the Trane part is listed at 440 VAC; match the equipment specification and terminal layout.
| split system heat pump capacitor | Capacitance | Voltage | Shape | Dimensions |
|---|---|---|---|---|
| FOCSPROD 60+5 uF CBB65B Dual R | 60+5 uF | 370/440 VAC | Round | 2.5 in W × 4.72 in H |
| MARS 12783 Round Dual Run Moto | 35+5 µF (MFD) | 440V AC | — | — |
| BOJACK 60 µF Round Run Capacit | 60 µF | 370/450 VAC | Round | 2.17 in diameter × 4.53 in height |
| BOJACK 7.5 µF ±6% 370V/440V CB | 7.5 µF | 370/440V AC | Oval | 2.03 × 1.22 × 3.55 in |
| GE Genteq Round Run Capacitor | 80+5 µF | — | Round | — |
| 40/5 MFD 370/440V Dual Run Rou | 40/5 MFD | — | — | 2 in diameter x 5-1/4 in tall |
| Rheem OEM Round Replacement Du | 60 + 3 UF/MFD | 370 V | Round | — |
| Trane CPT00659 30+5 µF 440 VAC | 30+5 µF | — | Round | — |
| 45+5 MFD 370/440 Volt Dual Run | 45+5 MFD (uF) | 440 VAC; replaces 370 VAC and 440 VAC capacitors | — | 2-3/8 in diameter x 4 in tall |
More Details on Our Top Picks
FOCSPROD 60+5 uF CBB65B Dual Run Round AC Capacitor, 370V/440V, for HVAC AC Units, Fan Motors, Heat Pumps, and Condensers
The FOCSPROD 60+5 uF dual run capacitor is the most versatile pick here for a split system that calls for both compressor and fan capacitance in one component. Its 370/440 VAC rating, labeled Herm, Fan, and C terminals, and UL recognition make it a stronger all-around fit than the single-value BOJACK 60 µF, which covers only the rating its system specifies. The broad -40°C to +70°C operating range also suits outdoor equipment exposed to seasonal conditions. The tradeoff is that 60+5 uF is a specific match, not a universal upgrade: it will not suit a unit needing a different dual rating, such as the MARS 12783’s 35+5 µF. I would check the equipment label, wiring diagram, and 2.5-by-4.72-inch dimensions before choosing it.
Pros:- Dual 60+5 uF rating serves compressor and fan circuits in one capacitor.
- 370/440 VAC rating fits systems specifying either listed voltage.
- Herm, Fan, and C terminals make the connection points easy to identify.
- UL Recognized and rated for operation from -40°C to +70°C.
Cons:- The 60+5 uF rating is unsuitable when the equipment specifies another value.
- Its 2.5-by-4.72-inch body may not fit every condenser compartment.
- Correct wiring and installation are required.
Best for: Owners or HVAC technicians replacing a split-system dual run capacitor specified at 60+5 uF who want clearly labeled terminals.
Not ideal for: Anyone whose unit calls for a different capacitance, a single-run capacitor, or a body size that will not fit.
- Capacitance:60+5 uF
- Voltage:370/440 VAC
- Frequency:50/60 Hz
- Type:CBB65B dual run
- Tolerance:±6%
- Shape:Round
- Dimensions:2.5 in W × 4.72 in H
- Operating temperature:-40°C to +70°C
- Certification:UL Recognized
Our verdict“Choose this for a compatible 60+5 uF dual run replacement when its labeled terminals and dual voltage rating suit your unit.”
MARS 12783 Round Dual Run Motor Capacitor, 35 + 5 µF, 440V
The MARS 12783 suits a narrower job than the FOCSPROD: it is a 35+5 µF dual run capacitor rated at 440V AC, so it fits only equipment calling for those specifications. That defined rating can make it a straightforward candidate when replacing a matching part, but the listing supplies fewer details than the FOCSPROD, including no stated dimensions, tolerance, or terminal layout. Its dual run design handles both motor circuits, while the single-value BOJACK 60 µF is intended for a different configuration and cannot serve as a substitute simply because both are round capacitors. I would treat compatibility as the deciding factor: check the unit label and existing capacitor, then confirm the physical fit and connections before installation.
Pros:- 35+5 µF dual rating serves compressor and fan circuits when specified.
- 440V AC rating is clearly stated.
- Supports both 50 Hz and 60 Hz operation.
- Round dual run format fits compatible motor applications.
Cons:- Not suitable for systems requiring a different capacitance or voltage.
- Listing does not provide dimensions, tolerance, or terminal details.
- Correct wiring and installation are necessary.
Best for: Repair technicians replacing a round 35+5 µF, 440V dual run capacitor in a split system with verified matching requirements.
Not ideal for: Buyers whose system specifies another capacitance or voltage, or who need detailed dimensions and terminal information before ordering.
- Model:12783
- Capacitance:35+5 µF (MFD)
- Voltage:440V AC
- Frequency:50/60 Hz
- Type:Round dual run capacitor
- Condition:Brand new
Our verdict“Pick the MARS 12783 only when the system calls for a 35+5 µF, 440V round dual run capacitor.”
BOJACK 60 µF Round Run Capacitor, 370/450 VAC, ±5% Tolerance
For a split system that specifies a single 60 µF run capacitor, this BOJACK offers a distinct alternative to the dual run FOCSPROD 60+5 uF. Its ±5% tolerance is tighter than the FOCSPROD’s ±6%, while its 370/450 VAC rating allows a 450V-rated unit to replace a 370V one when capacitance and other requirements match. This is a single-value part, though, so it cannot cover a fan circuit that needs its own second capacitance value. The aluminum case, through-hole mounting, and stated 2.17-by-4.53-inch size help buyers assess fit, but the product data warns that a 370V model cannot replace a 450V application. I would match the unit’s specified capacitance and voltage before treating the listed voltage options as interchangeable.
Pros:- Single 60 µF rating for equipment specified to use that run capacitor.
- ±5% tolerance is tighter than the FOCSPROD dual run option’s ±6%.
- Aluminum case and through-hole mounting are specified.
- 450V model can replace a 370V model when the remaining requirements match.
Cons:- Single-value design does not provide a separate fan capacitance.
- A 370V model cannot replace a 450V application.
- Capacitance and voltage must match the equipment requirements.
Best for: Technicians replacing a single 60 µF run capacitor who need a tighter stated tolerance and have confirmed the voltage requirement.
Not ideal for: Owners whose split system uses a dual run capacitor or requires a different capacitance or a 450V-rated part that this is not.
- Capacitance:60 µF
- Tolerance:±5%
- Voltage:370/450 VAC
- Frequency:50/60 Hz
- Shape:Round
- Case material:Aluminum
- Dimensions:2.17 in diameter × 4.53 in height
- Mounting:Through-hole
Our verdict“Choose this for a compatible single 60 µF run circuit, not for a system needing a dual run capacitor.”
BOJACK 7.5 µF ±6% 370V/440V CBB65 Oval Run Start Capacitor for AC Motor, Fan, Heat Pump, and Air Conditioner
The BOJACK 7.5 µF is the lineup’s compact oval option for a split system that specifies this single capacitance for a compatible motor circuit. Its 2.03-by-1.22-by-3.55-inch body provides a useful fit reference when a round capacitor such as the BOJACK 60 µF cannot fit the available space; the listing also says it can replace a compatible round capacitor when ratings match. The 370/440V operation and -40°C to +70°C range suit common outdoor equipment conditions. Its role is much narrower than the FOCSPROD dual 60+5 uF: 7.5 µF cannot replace a dual run part or another fan rating. I would verify the equipment’s capacitance and voltage requirements, along with terminal and mounting compatibility, before selecting it.
Pros:- Oval body offers a compact option with stated dimensions.
- 370/440V rating supports compatible applications at either specified voltage.
- Aluminum case, steel cover, and metallized polypropylene film dielectric are specified.
- Stated -40°C to +70°C operating range suits outdoor HVAC equipment.
Cons:- 7.5 µF rating is unsuitable for systems requiring other values.
- ±6% tolerance is less tight than the BOJACK 60 µF’s ±5%.
- Voltage and capacitance must match the equipment requirements.
Best for: Technicians replacing a compatible 7.5 µF oval run capacitor in a space-constrained heat pump or condenser.
Not ideal for: Owners whose unit requires a dual run capacitor, a different capacitance, or a voltage rating this model does not meet.
- Capacitance:7.5 µF
- Tolerance:±6%
- Voltage:370/440V AC
- Frequency:50/60 Hz
- Shape:Oval
- Dimensions:2.03 × 1.22 × 3.55 in
- Operating temperature:-40°C to +70°C
- Mounting:Through-hole
- Dielectric:Metallized polypropylene film
Our verdict“Choose this compact oval capacitor when your unit specifically calls for 7.5 µF and its voltage rating matches.”
GE Genteq Round Run Capacitor, 80 + 5 µF, 370 V
The GE Genteq 80+5 µF stands out for buyers seeking a stated drop-in replacement that needs no wiring changes or adapters. That convenience is useful only when the original split-system capacitor matches the 80+5 µF, 370V specification; compared with the FOCSPROD 60+5 uF, it serves a higher compressor capacitance and a different voltage rating. The listing also names snap-in mounting and model numbers 27L323BZ3 and 27L323, giving buyers specific identifiers to compare against the part being replaced. Its supplied details are sparse, however: dimensions, tolerance, and terminal arrangement are not listed. I would confirm the model reference, capacitor rating, and physical fit before relying on the drop-in claim, since this is not a general replacement for other dual ratings.
Pros:- 80+5 µF dual run rating is clearly identified.
- Listing describes it as a drop-in replacement with no wiring changes or adapters.
- Snap-in mounting type is specified.
- Two model references help identify compatible replacements.
Cons:- 370V rating is unsuitable when the system requires a different voltage.
- Dimensions, tolerance, and terminal arrangement are not provided.
- 80+5 µF is not interchangeable with the FOCSPROD 60+5 uF unless the equipment specifies the GE rating.
Best for: HVAC technicians replacing a compatible GE Genteq 27L323BZ3 or 27L323 capacitor in a system specified at 80+5 µF and 370V.
Not ideal for: Buyers whose equipment calls for another dual capacitance or voltage, or who need dimensions and terminal details to confirm fit.
- Capacitance:80+5 µF
- Operating voltage:370V
- Maximum voltage:370V
- Shape:Round
- Mounting:Snap-in
- Material:Polypropylene
- Model numbers:27L323BZ3, 27L323
Our verdict“Select this when the original part matches the GE model references and 80+5 µF, 370V specification.”
40/5 MFD 370/440V Dual Run Round Capacitor PW-40/5/R for Air Conditioner Condensers
The PW-40/5/R is the focused choice when a split system’s existing capacitor calls for 40/5 MFD. Its dual rating lets it replace 370 VAC and 440 VAC versions, while the listed part-number cross-references help identify a match. Compared with the PW-45/5/R, it has a lower compressor-side capacitance and a narrower fit: the original equipment specification must call for 40/5, not merely a similar-looking can. Its 2-inch by 5-1/4-inch body also needs to fit the available mounting space. The stated temperature range and EIA and IEC standards add useful product detail, but this is still a component-selection decision where matching capacitance, voltage, terminals, and dimensions matters. I’d skip it if the required rating is uncertain.
Pros:- Dual 370/440 VAC rating covers replacements for either voltage rating
- 40/5 MFD dual run design serves compressor and fan circuits in one component
- Cross-references several common replacement part numbers
- Listed operating range spans -40°C to +70°C
Cons:- Only matches systems specified for 40/5 MFD
- Can dimensions may not fit every condenser mounting location
- Installation requires HVAC electrical knowledge
Best for: Owners or HVAC technicians replacing a confirmed 40/5 MFD dual run capacitor in a compatible condenser or heat pump.
Not ideal for: Buyers whose equipment label calls for another capacitance or whose mounting space cannot accommodate a 2-inch by 5-1/4-inch round can.
- Capacitance:40/5 MFD
- Type:Dual run round
- Model:PW-40/5/R
- Dimensions:2 in diameter x 5-1/4 in tall
- Operating temperature:-40°C to +70°C (-40°F to 158°F)
- Standards:EIA-456-A; IEC 60252-1:2001
- Listed compatibility:Straight cool or heat pump air conditioner condensers
Our verdict“Choose the PW-40/5/R when the equipment specification confirms 40/5 MFD and its round-can dimensions fit.”
Rheem OEM Round Replacement Dual Run Capacitor 60 + 3 UF/MFD 370 Volt (43-23204-31)
For a Rheem system whose parts list specifies 43-23204-31, this OEM unit offers a direct brand-specific replacement path. Its 60 + 3 MFD rating differs sharply from the PW-40/5/R and PW-45/5/R, so those broader dual-voltage options are not substitutes when the equipment calls for Rheem’s 60/3 part. The benefit is the OEM identity and round dual-run format; the limitation is that the supplied details list only a 370 V rating, with no dimensions, operating range, or cross-reference list to help resolve fit questions. No installation instructions are included either. I’d favor it for a confirmed Rheem part-number match, while buyers without that confirmation have less information here than with the more fully specified PW capacitors.
Pros:- Genuine Rheem OEM part identified by part number 43-23204-31
- 60 + 3 MFD dual-run format combines two capacitor functions
- Round shape suits equipment designed for a round capacitor
Cons:- Listed voltage is 370 V, without the dual 370/440 VAC rating of the PW-40/5/R and PW-45/5/R
- No installation instructions are included
- Product details do not state dimensions or operating temperature range
Best for: Rheem equipment owners and HVAC technicians replacing a confirmed 43-23204-31, 60/3 MFD capacitor.
Not ideal for: Owners of other brands or systems with a different capacitor rating, especially when they need dimension or cross-reference details before ordering.
- Part number:43-23204-31
- Brand:Rheem
- Capacitance:60 + 3 UF/MFD
- Voltage:370 V
- Type:Dual run capacitor
- Shape:Round
- Condition:New OEM
Our verdict“Pick this Rheem OEM capacitor when the equipment documentation confirms part 43-23204-31 and its 60/3 MFD rating.”
Trane CPT00659 30+5 µF 440 VAC Round Dual Capacitor
The ClimaTek CPT00659 is the most targeted option here for a Trane system that calls for a 30+5 µF, 440 VAC capacitor. The listed compatible numbers—CPT-0659, C4305R, and 97F9981—give buyers specific ways to check a match, and the product is described as a drop-in replacement with no wiring changes or adapters required. That narrower Trane-focused fit contrasts with the PW-45/5/R, which has a different 45+5 rating and broader stated heat pump coverage. The snap-in mount may suit the intended installation, but compatibility still needs checking against the original capacitor and equipment specifications. Its 440 V rating is clearly stated; unlike the PW-40/5/R, the listing does not claim replacement coverage for both 370 V and 440 V units.
Pros:- Specific Trane replacement numbers are listed
- Described as a drop-in replacement without wiring changes or adapters
- 440 VAC rating is suited to equipment specified for that voltage
- Snap-in mounting type is stated
Cons:- Compatibility should be confirmed against the original part and equipment
- 30+5 µF rating will not suit systems calling for values such as 40/5 or 45/5
- Listing does not state dimensions or a temperature range
Best for: Trane owners or HVAC technicians replacing a confirmed CPT00659/CPT-0659 30+5 µF, 440 VAC capacitor.
Not ideal for: Buyers whose existing capacitor has another capacitance or voltage rating, or who need broad cross-brand compatibility.
- Capacitance:30+5 µF
- Operating voltage:440 V
- Maximum voltage:440 V
- Shape:Round
- Mounting type:Snap-in mount
- Material:Copper
- Compatible part numbers:CPT00659, CPT-0659, C4305R, 97F9981
- Brand:ClimaTek
Our verdict“Choose the CPT00659 when your Trane equipment specifies 30+5 µF at 440 VAC and a listed compatible part number.”
45+5 MFD 370/440 Volt Dual Run Round Capacitor PW-45/5/R for Air Conditioner Condensers and Heat Pumps
The PW-45/5/R pairs a 45+5 MFD rating with a 440 VAC label and replacement coverage for 370 VAC units, making it the most flexible voltage option among these four when the capacitance matches the equipment. Its C, FAN, and HERM terminals support compressor and fan circuits in one case, and the listed dimensions are shorter but wider than the PW-40/5/R: 2-3/8 inches across and 4 inches tall. That difference can matter in a crowded condenser. The 5-year lifespan guarantee and cited EIA and IEC standards add assurance details, though neither removes the need to match the original rating and physical fit. Compared with the Trane CPT00659, this model covers a different capacitance and broader stated system types, but it is not a universal replacement.
Pros:- Replaces listed 370 VAC and 440 VAC capacitors
- C, FAN, and HERM terminals serve compressor and fan circuits in one unit
- Stated 5-year lifespan guarantee
- Operating range is listed as -40°C to +70°C
Cons:- Only suitable when 45+5 MFD matches the equipment specification within the stated tolerance
- Wider can may not fit the same space as the narrower PW-40/5/R
- Installation requires electrical knowledge
Best for: Heat pump and condenser owners replacing a confirmed 45+5 MFD dual-run capacitor who need coverage for either 370 or 440 VAC units.
Not ideal for: Buyers whose equipment calls for a different capacitance, terminal layout, or can size, or who cannot verify the existing part.
- Capacitance:45+5 MFD (uF)
- Voltage:440 VAC; replaces 370 VAC and 440 VAC capacitors
- Type and shape:Dual run round
- Dimensions:2-3/8 in diameter x 4 in tall
- Operating temperature:-40°C to +70°C (-40°F to 158°F)
- Terminals:C, FAN, HERM
- Standards:EIA-456-A; IEC 60252-1:2001
- Warranty:5-year lifespan guarantee
- Model:PW-45/5/R
Our verdict“The PW-45/5/R suits buyers with a verified 45+5 MFD requirement who want one replacement rating for 370 or 440 VAC applications.”
How We Picked
I ranked these capacitors by how clearly their listed ratings and intended uses help a buyer match a split system heat pump. Dual-run models with both compressor and fan values have broader relevance for systems specified for that configuration, while single-run models remain useful for a circuit calling for one capacitance value. I also weighed stated voltage, shape, OEM or brand identification, and compatibility descriptions because an electrically correct rating still has to fit the equipment.
The order reflects fit clarity and practical usefulness, not a claim that one capacitance is universally better. FOCSPROD leads for its explicit heat-pump scope and combined 60+5 rating; MARS, BOJACK, GE Genteq, and the PW models serve different specified ratings. Rheem and Trane have clearer manufacturer associations, which can help with an exact replacement, but their ratings only suit matching equipment. I treat listed specifications as product information, not a substitute for checking the unit label or service documentation.
| split system heat pump capacitor | Shape |
|---|---|
| FOCSPROD 60+5 uF CBB65B Dual R | Round |
| MARS 12783 Round Dual Run Moto | — |
| BOJACK 60 µF Round Run Capacit | Round |
| BOJACK 7.5 µF ±6% 370V/440V CB | Oval |
| GE Genteq Round Run Capacitor | Round |
| 40/5 MFD 370/440V Dual Run Rou | — |
| Rheem OEM Round Replacement Du | Round |
| Trane CPT00659 30+5 µF 440 VAC | Round |
| 45+5 MFD 370/440 Volt Dual Run | — |
Factors to Consider When Choosing Split System Heat Pump Capacitor
Choosing a capacitor starts with identifying what the heat pump actually calls for. The following checks help prevent a mismatch that a familiar brand name or similar-looking canister cannot resolve.
Match the Microfarad Rating Exactly
Read the rating on the existing capacitor and compare it with the unit wiring diagram or service documentation. A dual-run part may show two values, such as 60+5 µF, which correspond to separate motor circuits; a single value such as 60 µF serves a different configuration. Do not round to a nearby rating because a capacitor looks close or is easier to find. This matters in this roundup because the dual-run options range from 30+5 to 80+5 µF, and Rheem’s 60+3 µF differs from the 60+5 µF choices. If the old label is unreadable, use model-specific documentation or ask a qualified HVAC technician to identify the correct specification.
Read Voltage and Frequency Requirements
Check the voltage rating required by the equipment and compare it with the replacement listing. Several products here give a dual 370/440V rating, BOJACK’s 60 µF model lists 370/450 VAC, and the Trane part lists 440 VAC. A higher voltage rating is commonly used as a replacement when the equipment specification allows it, but do not assume every unit accepts every listing. Confirm the unit’s documentation and the capacitor’s AC rating before ordering. A voltage match alone does not make the capacitance or wiring configuration suitable.
Confirm Dual-Run or Single-Run Configuration
Determine whether the system uses one capacitor for both compressor and fan circuits or separate capacitors. A dual-run capacitor combines two capacitance values in one body, while a single-run capacitor has one value for its intended circuit. The BOJACK 60 µF and 7.5 µF options are single-value models in this roundup, so neither replaces a dual-run part simply because one number appears to match. Check terminal markings and the unit wiring diagram before selecting a configuration. If the wiring or old part is unclear, stop and have a technician confirm the setup instead of relying on appearance.
Check Canister Shape, Dimensions, and Terminals
Round and oval capacitors can have different mounting needs, and a replacement must fit the available space and bracket. This list includes mostly round units and one oval BOJACK 7.5 µF option. Compare the physical dimensions and terminal arrangement with the existing part, then confirm there is room for the wiring without strain. A part with the right electrical numbers can still be inconvenient or unsafe to install if its terminals or mounting do not match. Product listings may omit details, so consult the manufacturer data when the measurements are not clear.
Use OEM Numbers When Replacing a Specific Unit
If the existing part carries a model or replacement number, use it to verify compatibility against the heat pump’s make and model. The Rheem 43-23204-31 and Trane CPT00659 provide specific identifiers that can make an exact-match search more direct. That advantage applies only when the number is confirmed for your equipment; brand association by itself does not establish fit. Generic options may cover more stated applications, but they still require an exact rating match. Keep the old part label and unit model information available when checking cross references.
Treat Capacitor Work as an Electrical Repair
A capacitor can retain an electrical charge after power is switched off, so replacement involves more than swapping matching wires. Follow the equipment maker’s service instructions and applicable electrical safety practices, or hire a qualified HVAC technician. Do not rely on a photo or wire position alone if connections are uncertain; terminal labels and the wiring diagram matter. Also investigate recurring failures, since a new capacitor may not address a motor, wiring, or airflow problem. A correct part is only one part of a safe and lasting repair.
Frequently Asked Questions
Can I replace a 60+5 µF capacitor with a 60+3 µF model?
No, not unless the heat pump documentation specifies 60+3 µF. The first value may match while the fan-side value differs, and both values in a dual-run capacitor matter. The Rheem 60+3 µF listing is not interchangeable with the 60+5 µF FOCSPROD or PW options based on the shared first number alone. Check the old label and unit wiring data before ordering. If those sources disagree, ask a qualified technician to identify the correct part.
Is a 440V capacitor a suitable replacement for a 370V part?
It may be suitable when the capacitance, configuration, and equipment specifications all match, but the voltage number alone cannot confirm compatibility. Several products in this roundup list both 370V and 440V, while the Trane listing specifies 440 VAC. Verify the unit manufacturer’s guidance and confirm that the replacement is an AC motor-run capacitor of the required type. Do not substitute a different capacitance just because its voltage rating is higher. When the equipment data is unavailable, have a technician check it.
Can I use the BOJACK 60 µF single-run capacitor in place of a 60+5 µF dual-run capacitor?
No, the ratings describe different configurations. A 60+5 µF dual-run unit provides two capacitance values for separate circuits, while a 60 µF single-run model provides one. Matching the larger number does not provide the second value required by the dual-run setup. Choose a part matching both the wiring arrangement and every rating on the equipment specification. Have a technician confirm the configuration if the original capacitor or wiring diagram is hard to read.
Should I choose an OEM capacitor or a generic replacement?
An OEM-labeled part can make cross-referencing easier when its replacement number is confirmed for the exact heat pump model. In this lineup, Rheem 43-23204-31 and Trane CPT00659 offer identifiable manufacturer references. A generic option can also be appropriate when its capacitance, voltage, configuration, dimensions, and terminals all match the equipment requirements. Do not choose on brand alone, and do not assume an OEM part fits every unit from that manufacturer. Check the model-specific parts information before purchase.
What should I do if I cannot read the old capacitor label?
Find the heat pump model number and consult its service documentation or parts data for the specified capacitor. A replacement should not be selected by guessing from the canister size, wire colors, or a partial rating. The options here cover several distinct values and include both single-run and dual-run designs, which can look similar at a glance. If documentation does not resolve the part, ask a qualified HVAC technician to inspect the equipment. Avoid energizing a system with a suspected failed capacitor while waiting for identification.
Conclusion
For a buyer whose unit calls for 60+5 µF, I’d choose the FOCSPROD dual-run capacitor as the best overall because its listing explicitly includes heat pumps and it combines both ratings. The PW-40/5/R or PW-45/5/R is the value-minded route when one of those exact ratings is specified, while the GE Genteq 80+5 µF is the premium brand-focused pick for systems requiring that rating. Beginners should start with a model number and the equipment documentation, then favor a clearly cross-referenced option such as the matching Rheem or Trane OEM part. For a standalone circuit, the BOJACK 60 µF or oval 7.5 µF may fit a specific need, but only when that exact single-run value is called for. The right choice is the one that matches the heat pump’s specified capacitance, voltage, configuration, and physical fit.
Fall Picks
fall essentials
As an affiliate, we earn on qualifying purchases.
