Full Electrical And Pressure Test
We test the capacitor, contactor, thermostat, and control board with a multimeter and clamp meter, then read system pressures with a manifold gauge set. You get superheat and subcooling numbers, not a guess.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
Workmanship Guaranteed in McLean
What Our Heat Pump Not Cooling Service Covers
Every no-cool visit includes a full diagnostic, a written price before work starts, and a post-repair performance test. Here is what is built into the service and what we quote separately if your system needs it.
Refrigerant Leak Detection
If pressures point to a low charge, we use an electronic leak detector and pressure testing to find the leak. Repair and recharge with R-410A or R-32 to the data plate spec is quoted based on where the leak sits.
Coil And Airflow Cleaning
A dirty condenser coil mimics a refrigerant fault. We clean the coil with a coil cleaning pump and comb the fins with a fin comb, then check filter condition and duct pressure to confirm airflow is not the real problem.
Failed Part Replacement
Capacitors, contactors, thermostats, and common blower and fan motors come off the truck. We install the part, verify amp draw against the nameplate, and confirm the system cycles correctly before we leave.
Post-Repair Performance Test
We run the system 20 to 30 minutes and measure the return-to-supply temperature split. A healthy reading is 16 to 20 degrees. You see the number and know the repair worked before we pack up.
Heat Pump Not Cooling Repair McLean VA Explained
Heat Pump Not Cooling Repair McLean VA is the diagnostic and repair service that restores cooling when your heat pump runs but refuses to drop the indoor temperature. It covers everything from a failed capacitor or contactor to a stuck reversing valve, low R-410A refrigerant charge, or a control board that stopped signaling the outdoor unit. We test the full circuit with a manifold gauge set and clamp meter before we touch a part.
In McLean, most no-cool calls land between May and September, when humidity pushes systems hard and attic-mounted air handlers cook in 130-degree heat. Homes near Chesterbrook and Franklin Park with mature tree cover deal with condenser coils packed with pollen and leaf litter, which chokes airflow and mimics a refrigerant problem. If you are searching for a pro to fix heat pump not cooling near me McLean, we run the pressure and superheat numbers first so you pay for the real fix.
What To Expect From Start To Finish
Five clear steps take you from a warm house to a cold vent. Here is exactly how a Heat Pump Not Cooling Repair McLean VA visit runs.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
04
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools And Methods We Use
Tools & Equipment
Manifold gauge set
Reads suction and liquid line pressures so we can calculate superheat and subcooling and confirm whether the charge is correct or low.
Clamp meter and multimeter
Measures amp draw and voltage at the compressor, fan motor, capacitor, and contactor to isolate electrical failures without guesswork.
Electronic leak detector
Sniffs out refrigerant leaks at joints, Schrader ports, and coil bends when pressures point to a low charge.
Coil cleaning pump and fin comb
Cleans packed condenser and evaporator coils and straightens bent fins so airflow and heat exchange return to spec.
Duct pressure gauge
Checks static pressure across the air handler and ductwork to confirm airflow is not the hidden cause of a frozen or underperforming coil.
Vacuum pump and recovery machine
Recovers refrigerant to EPA Section 608 standards and pulls a deep vacuum before any recharge, protecting the compressor.
Methods & Standards
Superheat and subcooling verification
We calculate both values against the manufacturer's charging chart instead of guessing by feel. This tells us whether the system is undercharged, overcharged, or restricted at the metering device.
Electrical component testing
We test capacitor microfarads against the rated value, check contactor pitting, and measure amp draw on every motor. A capacitor rated at 45 microfarads that reads 25 is failing, even if it still starts the unit.
Leak isolation and pressure testing
When charge is low, we isolate the circuit, pressure test with nitrogen, and use an electronic detector to find the exact leak point before we repair and recharge.
Airflow and static pressure balancing
We measure static pressure and temperature split, then seal duct leaks with duct sealant and adjust registers so every room gets its share of cool air.
When McLean Homeowners Call Us
01
A July heat wave pushes a 12-year-old heat pump past its limit, and the house will not drop below 78 degrees by evening.
What we do: We run a full diagnostic the same day, test the capacitor and refrigerant charge, and repair whatever failed. If the compressor is truly gone, we give you a straight replacement quote with no pressure.
→ Cool air restored the same day in most cases, and a clear plan if replacement makes more sense than repair.
02
A homeowner returns from vacation to find the upstairs mini-split blowing warm air and water on the floor.
What we do: We clear the clogged condensate drain line, clean the blower wheel and coil, and check the refrigerant charge on the ductless head.
→ The mini-split cools again, the floor stays dry, and you get filter-cleaning tips to prevent a repeat.
03
A real estate agent needs a heat pump not cooling house McLean issue resolved before a Friday closing.
What we do: We prioritize the call, document the diagnosis and repair in writing, and provide the paperwork the buyer and seller need for the transaction.
→ The system passes a cooling test before closing, and the deal moves forward without a repair credit negotiation.
04
A homeowner notices the outdoor unit short-cycling and the breaker tripping on hot afternoons.
What we do: We test compressor amp draw, capacitor microfarads, and contactor condition, since a failing start component or a grounded compressor causes both symptoms.
→ The failed part is replaced, the breaker stops tripping, and the system runs full cooling cycles again.
How Heat Pump Not Cooling Repair Runs In McLean
McLean sits in Fairfax County with humid summers that push heat pumps hard from June through September. Homes in Chesterbrook and Franklin Park often have mature oak and maple canopy, which drops pollen and leaf litter onto condenser coils every spring and chokes airflow. Attic-mounted air handlers in Langley Forest and Country Club Hills see temperatures above 130 degrees in July, which stresses capacitors and blower motors. When you call for HVAC heat pump not cooling McLean Virginia service, we account for all of it. We clean coils as part of the diagnostic, test components under real load, and check duct static pressure because undersized returns in older McLean homes starve the coil and cause freezing. If you are asking why is my heat pump not cooling in McLean, the answer is usually one of four things: a failed capacitor, a stuck reversing valve, a refrigerant leak, or restricted airflow. We find which one and fix it.
Neighborhoods We Serve
-
Chesterbrook
Heavy tree cover means condenser coils pack with pollen and leaf debris each spring, so coil cleaning is part of nearly every no-cool call here.
-
Langley Forest
Large homes with attic air handlers face extreme summer heat, which shortens capacitor and blower motor life. We test those parts under load.
-
West McLean
A mix of older and newer systems, including ductless mini-splits. We carry parts for both conventional and inverter-driven units.
-
Salona Village
Tight lots mean condensers sit close to walls and shrubs, restricting airflow. We check clearance and recommend trimming where it matters.
Local Conditions We Plan For
-
High summer humidity and 95-degree afternoons
Systems run long cycles, which exposes weak capacitors and low refrigerant charge. We test under these real conditions rather than a short cycle.
-
Spring pollen and leaf litter on outdoor coils
Restricted airflow mimics a refrigerant fault and drives up head pressure. Cleaning the coil often restores cooling without a recharge.
-
Older ductwork with undersized returns
Low return airflow causes coil freezing and poor cooling. We measure static pressure and recommend duct corrections when needed.
-
Fairfax County permit requirements on replacements
We pull the required permits on system replacements so the install passes inspection and your warranty stays valid.
Capacitor Swap Restores Cold Air
No-Cool Problems We Solve In McLean
Most heat pump not cooling house McLean calls trace back to one of a handful of failures. Here are the ones we see most and how we handle them.
Problem
Heat pump runs but only blows warm air
The house climbs past 80 degrees within hours, and running the system in this state can overheat the compressor and turn a $300 repair into a $2,000 replacement.
Our Fix
We test the capacitor and contactor first, since a weak capacitor stops the compressor from starting. If those check out, we read pressures to rule out a low charge or a reversing valve stuck in heat mode, then repair the failed component.
Problem
Outdoor unit hums but the fan will not spin
Without the fan, the coil cannot shed heat, pressures spike, and the system trips on high pressure or shuts down entirely, leaving you with no cooling at all.
Our Fix
A fan motor or run capacitor is usually the cause. We test amp draw and capacitance, replace the failed part from our truck stock, and verify the fan spins at the correct speed before testing the full cooling cycle.
Problem
Coil freezes into a solid block of ice
Ice blocks airflow completely, so the system stops cooling and the thaw can flood the drain pan and damage the ceiling below in an attic install.
Our Fix
We thaw the coil safely, then find the cause: low refrigerant from a leak, a failing defrost control board, or restricted airflow from a dirty filter or blower motor. We fix the root issue so the coil does not freeze again.
Problem
Thermostat calls for cool but nothing happens
You wait hours assuming the system is just slow, while the real problem is a thermostat, control board, or low-voltage wiring fault that will never fix itself.
Our Fix
We test thermostat calibration and low-voltage signals at the control board. If the board is not passing the call to the outdoor unit, we repair or replace it and confirm the system starts on command.
Why McLean Homeowners Call Us First
A heat pump that will not cool is a comfort emergency, not a maintenance item. Here is what you get when you book us.
-
Same-Day Cooling Diagnosis
Call before noon and we aim to have a tech at your door the same day. We test capacitor microfarads, contactor voltage, and refrigerant pressures on arrival, so you get a straight answer within the first hour instead of a vague guess.
-
Parts On The Truck
Our vans stock capacitors, contactors, thermostats, and common blower motors for Carrier, Trane, Lennox, Goodman, and Rheem units. That means most no-cool repairs finish in one visit, not two, and you sleep in a cool house tonight.
-
Fairfax County Code-Correct Work
Every repair follows Virginia HVAC contractor license standards and Fairfax County permit rules where they apply. We pull permits when the job needs one, and we document refrigerant handling under EPA Section 608 so your system stays legal and warrantied.
-
Upfront Pricing, No Surprises
You get the price before we start. Diagnostic runs $89 and applies toward the repair. Most capacitor and contactor jobs land between $180 and $420, and we tell you the number in writing before a single screw comes out.
What Heat Pump Not Cooling Repair Costs
Typical 2026 pricing in McLean runs $180 to $420 for capacitor or contactor replacement, $350 to $900 for blower or fan motor work, and $600 to $1,600 when a refrigerant leak needs locating and recharging. Diagnostic is $89 and applies toward the repair. What moves the number is part type, refrigerant type, and how deep the tech has to go to reach the failure. A capacitor on an accessible outdoor unit is a quick job. A blower motor in a cramped attic air handler takes longer. We quote the price before we start, and you decide with real numbers in front of you.
Typical Investment Range
$89 diagnostic, then $180 - $1,600 depending on the failed part and refrigerant work
You pay for a measured diagnosis and a repair that fixes the cause, not a guess that leaves you calling again next month. Parts carry a manufacturer warranty, and our labor is warrantied too.
What changes the price
01
Failed component type
A capacitor or contactor is inexpensive and fast to replace. A blower motor, fan motor, or control board costs more in parts and labor because of access and testing time.
02
Refrigerant type and charge
R-410A and R-32 carry different costs, and the amount needed depends on line set length and system size. Leak repair adds labor to find and seal the leak before recharge.
03
Access and location
An outdoor unit on a pad is easy to reach. An attic air handler in a low-clearance space adds time and care, which shows up in the labor portion of the quote.
04
Compressor or major part failure
When the compressor itself has failed, repair cost climbs and replacement often makes more financial sense. We give you both numbers and let you choose.
05
Ductwork corrections
If airflow problems caused the no-cool condition, sealing leaks and balancing registers adds scope. We quote it separately so you see exactly what it buys.
Licensed, Certified, And Accountable
Licensed & Certified
- NATE certification — issued by North American Technician Excellence
- EPA Section 608 certification — issued by U.S. Environmental Protection Agency
- Virginia HVAC contractor license — issued by Virginia Department of Professional and Occupational Regulation
- AHRI certification — issued by Air-Conditioning, Heating, and Refrigeration Institute
- OSHA safety compliance — issued by Occupational Safety and Health Administration
Verified Reviews
Google ★★★★★4.9
Fast, honest, and they showed me the failed capacitor reading before replacing it. House was cold within two hours. I have used them twice now and both times the price matched the quote.
Yelp ★★★★★4.8
Called on a Saturday with no cooling and they had a tech out by early afternoon. He found a stuck reversing valve, explained it clearly, and finished the repair the same day. No upselling, just the fix.
BBB ★★★★★4.9
They diagnosed a refrigerant leak two other companies missed, repaired it, and recharged the system to spec. Cooling has been solid for two summers since. Worth every dollar.
What McLean Neighbors Say
Real experiences from customers who chose our Heat Pump Not Cooling services.
“Our heat pump ran all afternoon but the house stayed at 80. The tech tested the capacitor, showed me it read 22 microfarads instead of 45, and had a new one in within the hour. Cold air by dinner. He also cleaned the outdoor coil, which was full of pollen. Fair price, no upsell.”
K
Karen M.
Homeowner, Chesterbrook
“Called at 8 a.m. on a Saturday in July with no cooling at all. They had a tech here by noon. Turned out the contactor was pitted and the reversing valve was sticking. He explained both, gave me the price, and finished the same day. House was cold by 4 p.m.”
D
David R.
Homeowner, Langley Forest
“Our mini-split stopped blowing cold in the upstairs office. They found a clogged condensate line and a dirty blower wheel, cleaned both, and checked the refrigerant charge. It has run perfectly since. They also walked me through filter cleaning so I can keep it that way.”
P
Priya S.
Homeowner, West McLean
Frequently Asked Questions
Real answers to the questions we hear most often from local homeowners and property managers.
Why is my heat pump not cooling in McLean VA?
The most common causes are a failed capacitor, a stuck reversing valve, low refrigerant from a leak, or a dirty outdoor coil. In McLean, pollen and leaf debris pack condenser fins every spring, which chokes airflow and mimics a refrigerant fault. We test pressures and electrical components to pinpoint the real cause before recommending any repair.
How much does heat pump not cooling repair cost in McLean?
Typical 2026 pricing in McLean runs $180 to $420 for capacitor or contactor replacement, $350 to $900 for blower or fan motor work, and $600 to $1,600 when a refrigerant leak needs locating and recharging. Diagnostic is $89 and applies to the repair. You get the number before we start work.
Who fixes heat pump not blowing cold air near me in McLean?
We do. McLean Heat Pump Pro Masters handles heat pump not blowing cold air in McLean VA and across Fairfax County, including Chesterbrook, Langley Forest, and West McLean. Our techs carry NATE and EPA Section 608 certification and stock common parts, so most repairs finish in a single visit.
Can a heat pump not cooling be repaired same-day in McLean Virginia?
Yes, in most cases. Call before noon and we usually reach you the same day. Capacitor, contactor, thermostat, and control board failures are same-day fixes because we carry those parts. Refrigerant leak repairs may need a return trip if the leak is buried in a wall or line set, and we tell you that upfront.
Related Services
Heat Pump Repair
General heat pump repair covers the full system, not just cooling loss. If your unit short-cycles, trips the breaker, or makes odd noises alongside the no-cool symptom, we handle both in one visit across McLean.
View Heat Pump RepairHeat Pump Installation
When a compressor fails and the unit is past 15 years old, replacement beats repair. We size and install Carrier, Trane, and Mitsubishi Electric systems to match your McLean home's load, with AHRI-matched components.
View Heat Pump InstallationHeat Pump Maintenance
Twice-a-year tune-ups prevent most no-cool calls. We clean coils, test capacitors, check refrigerant charge, and calibrate thermostats so your system holds its cooling capacity through a McLean summer.
View Heat Pump MaintenanceEmergency Heat Pump Repair
Our 24/7 emergency line covers no-cool calls after hours and on weekends. When your house hits 85 degrees at 10 p.m. in July, we dispatch a tech with parts on board rather than leaving you until morning.
View Emergency Heat Pump RepairHeat Pump Not Heating
The mirror image of a no-cool call. A reversing valve stuck in cooling mode or a failed defrost control board leaves you cold in January. We diagnose both modes together because the same valve controls each.
View Heat Pump Not HeatingHeat Pump Blowing Cold Air
In heat mode, cold air from the vents points to a reversing valve, defrost board, or auxiliary heat fault. We test the valve solenoid and backup heat strips to restore warm air fast.
View Heat Pump Blowing Cold AirContact McLean Heat Pump Pro Masters
Call us any time at (571) 760-4593 for heat pump repair in McLean, Virginia. We answer live 24/7, book same-day appointments, and dispatch emergency calls across Fairfax County. You can also email info@mcleanheatpumppromasters.com or stop by the shop during regular hours.
McLean Heat Pump Pro Masters
-
Phone
(571) 760-4593 -
Address
7321 Hooking Rd, McLean, VA 22101
-
Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available