Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateRheem Heat Pump Service: The Marietta Owner’s Guide
If your Rheem heat pump has stopped heating or cooling properly, the fix usually comes down to one of a handful of parts: a capacitor, contactor, defrost control board, reversing valve, or thermostatic expansion valve. Most Rheem heat pump component replacements in Marietta run $150 – $650 installed, depending on which part failed. We stock the common Rheem-compatible parts on our trucks, so in many cases we can diagnose the problem and complete the repair in a single visit.
We’re an independent heating and air company in Marietta, not a Rheem dealer or factory affiliate. That matters because we aren’t tied to one brand’s parts pipeline, which means we can often source an OEM Rheem part or a proven aftermarket equivalent faster than a dealer waiting on a distribution order. Most homeowners call us after noticing the heat pump runs constantly but the house won’t hold temperature, or the outdoor unit makes a loud buzzing or clicking noise, or the system trips its breaker.
Tell me what the system is doing, and I will tell you exactly what it needs – no guesswork, no runaround.
Which Rheem Models This Applies To
Rheem has built heat pumps under several series names over the last two decades, and the part compatibility is not always obvious from the outside. We service the RP14, RP15, RP16, RP17, and RP20 lines, plus the older RPNL and RPPC units still running in plenty of Marietta homes. Also covered: the Rheem Prestige series, the Classic series, and the two-stage units that became common in Cobb County builds from roughly 2005 onward.
The gotcha with Rheem-specific parts is the serial number. Rheem encodes the manufacture date and factory in the serial, and a part that fits a 2012 RP15 may not fit a 2019 RP15, especially on control boards and defrost sensors. Before any part gets ordered or pulled off the truck, we read the model and serial off the outdoor unit’s data plate, not off the thermostat or the old invoice, because homeowners understandably mix those up.
On OEM versus aftermarket: Rheem OEM parts carry the exact factory tolerance and often a better warranty on paper. Quality aftermarket equivalents from suppliers like Mars, Genteq, or Supco can match performance at a lower price for things like capacitors and contactors. We give you the option and the honest tradeoff. For control boards and reversing valves, we lean OEM every time. For a start capacitor or a contactor, a good aftermarket part is usually just as reliable and costs noticeably less.
Styles & brands we work with







Signs Your Rheem Heat Pump Service Is Failing
- Outdoor unit hums but the fan doesn’t spin. This is the classic failed capacitor. The compressor may be trying to start but the fan motor never gets the jolt it needs. If you catch it early, it’s a $150 – $280 fix. If you let the fan motor sit stalled, you’re often buying a whole new fan motor on top of the capacitor.
- System runs in one mode but not the other. A heat pump that cools fine but won’t heat, or heats but won’t cool, frequently points to a sticking reversing valve or a failed valve solenoid coil. We see this pattern a lot in Marietta during the first real cold snap of November, when systems switch to heat for the first time in eight months and the valve won’t budge.
- Unit frosts over in cooling or heating at mild temperatures. A defrost control board or defrost sensor that quits turns the outdoor coil into an ice block. In Georgia’s humid shoulder seasons, a compromised defrost cycle shows up fast because the coil pulls moisture out of air that’s still warm enough to carry it.
- Breaker trips once, then trips again after you reset it. A failing compressor run capacitor or a shorted crankcase heater can pull excess current. Do not keep resetting the breaker. One reset to confirm the problem, then call us. Repeated resets can burn contacts and turn a $200 part replacement into compressor damage.
- House reaches temperature but the system short-cycles. The heat pump starts, runs five or ten minutes, shuts off, then starts again. A failing thermostatic expansion valve (TXV) or a clogged filter-drier can cause this. It drives up electric bills and wears out the compressor years early.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
Most Rheem heat pump part replacements in Marietta land between $150 and $650, parts and labor included. That range covers the common failures: capacitors, contactors, defrost sensors, fan motors, and board replacements. A reversing valve, which requires recovering and recharging refrigerant and more involved labor, sits at the high end of that range and occasionally slightly above it when the system is an older R-22 unit.
Here’s the line-item breakdown we hand you before any work begins, written on paper, not recited from memory:
- Diagnostic fee: $80 – $120, typically waived when you approve the repair on the spot
- Capacitor replacement: $150 – $280 installed
- Contactor replacement: $140 – $250 installed
- Defrost control board or sensor: $180 – $350 installed
- Condenser fan motor: $250 – $450 installed
- Reversing valve: $450 – $650 installed, including refrigerant recovery and recharge
- TXV or filter-drier: $280 – $520 installed
The written price you approve is the price you pay. It doesn’t change when the technician “finds something else.” And every repair carries our 365-Day Done Right Promise: if the part or the work fails inside a full year, we come back, fix it, and you don’t pay for the second visit. Victor Mancini has been the owner here long enough to know that a guarantee written before the work starts is the only kind worth having.
DIY or Call Us?
You can safely check a few things: the thermostat setting, the air filter, and whether the outdoor unit’s disconnect box was accidentally switched off. You can also look at the outdoor coil for obvious debris, like a dogwood bloom pack or a plastic bag sucked against the fins. Those checks take ten minutes and don’t open anything electrical.
What you should not do is open the outdoor unit’s service panel with the power on. Even with the disconnect pulled, capacitors store a charge that can knock you across the yard. And a heat pump’s refrigerant circuit is sealed; if the system is low on charge, that means there’s a leak, and adding refrigerant to a leaking system without finding and fixing the leak is money down the drain. Georgia’s humid summers punish undercharged heat pumps hard, so an incorrect DIY refrigerant top-off usually shows up as a frozen coil within weeks.
If you’ve already done your basic checks and the system still isn’t right, call (762) 240-5599. A live person answers, day or night, and we’ll get a technician to you in a firm arrival window.
FAQs
A well-installed Rheem heat pump should give you 12 to 15 years of service in the Marietta climate, but individual parts have shorter lives: capacitors commonly fail at the 5 to 8 year mark, contactors at 8 to 10 years, and defrost control boards somewhere between 8 and 12 years depending on how hard the unit has cycled. Georgia’s summer humidity and long cooling season put more hours on a heat pump than a unit in a milder climate, so Marietta systems tend to hit those part replacement windows earlier than, say, a unit in New England.
For most failed electrical and mechanical components, replacement is the repair. A capacitor, contactor, or defrost board isn’t built to be disassembled and restored; when it fails, it gets swapped for a new component. The one exception is a reversing valve solenoid coil, which can be replaced on its own without replacing the entire valve body in some Rheem models. Call us at (762) 240-5599 and we’ll tell you honestly which situation applies to your unit.
Most common part swaps, including capacitors, contactors, and defrost sensors, are done in under an hour once the technician is on site. A condenser fan motor takes 60 to 90 minutes. A reversing valve or TXV replacement runs two to three hours because it involves recovering refrigerant, brazing in the new component, pressure testing, and recharging. We give you the time estimate up front, and we show up in the window we promised.
We keep the common Rheem-compatible parts on our service trucks: capacitors in the common ratings, contactors, defrost sensors, and a range of fan motors. We also carry parts that fit Carrier, Trane, and Lennox systems. For less common items like a specific control board or reversing valve, we source it same-day from local distributors serving Cobb County. If the part isn’t available same-day, we tell you before you commit, not after the system is torn apart.
When your Rheem heat pump quits in the middle of a Georgia summer or a cold January night, you need a straight answer and a fast fix. Call (762) 240-5599 for a free estimate, and we’ll give you the written price before any work begins. A live person answers 24/7, every day of the year.
Written by Victor Mancini, Owner, Cold Harbour Heating and Air Marietta at Cold Harbour Heating and Air Marietta, serving Marietta and nearby areas.