HVAC and AC repair before the house turns uncomfortable

Because that's how a heat pump works. It moves heat instead of burning fuel to make it, so on a cold morning it runs long and gentle rather than short and hot. The air from the vents feels lukewarm rather than toasty, and that's normal. What isn't normal is backup electric heat running all day, an outdoor unit iced over for hours without defrosting, or a power bill that jumps with no change in the weather. Heat pumps suit coastal Virginia because the winters are mild enough for them to work well. When one fails it takes your heating and your cooling at the same time, so we treat those calls differently.

• Heat pump blowing cold air when the thermostat is calling for heat
• Outdoor unit iced over and not clearing itself
• Heat pump runs constantly and never reaches the set temperature
• Auxiliary or emergency heat stuck on, with a power bill to match
• Grinding, screeching or rattling from the outdoor unit
• Reversing valve stuck, so the system cools when you ask for heat
• Outdoor fan turning but nothing moving through the vents inside
• Heat pump replacement when the compressor is done and repair no longer makes sense

Most no-cooling calls come down to four things. A tripped breaker, a filter so clogged it's choking airflow, a frozen evaporator coil, or low refrigerant from a leak. The first two you can check yourself in about five minutes. The other two need gauges and a proper leak search, because topping off refrigerant without finding the leak means paying for the same repair twice. If the coil is iced up, shut the system off and let it thaw before anyone opens it, or the diagnosis will be wrong.

• AC running but blowing warm air
• Outdoor unit humming while the fan sits still
• Ice on the copper lines or on the indoor coil
• The AC breaker trips every time the system starts
• AC short cycling, kicking on and off every few minutes
• Burning or musty smell when the system first starts up
• Thermostat set to 72 and the house sitting at 79 all afternoon
• AC installation and replacement when the repair bill stops being worth it

Age and the price of the failed part usually settle it. A cheap ignitor or a flame sensor on a furnace with years left is an easy call. A failed control board or a cracked heat exchanger on an old unit is a different conversation, and a cracked heat exchanger is a combustion safety issue rather than a comfort one. Plenty of Hampton Roads homes pair a gas furnace with a heat pump, so we look at how the two are set up to hand off to each other, not just the box that stopped working.

• Furnace won't light, or lights and shuts down after a minute
• Furnace blowing cold air through the vents
• Ignitor or flame sensor failure on an older unit
• Blower that runs constantly and never shuts off
• Burner flame burning yellow instead of blue
• Furnace short cycling on the high limit switch
• Dual fuel setup where the furnace and heat pump fight each other
• Furnace replacement and correct sizing for the house

Yes, and it's one of the cheapest fixes in the trade. Dead batteries, a loose wire behind the plate, or the wrong configuration for a heat pump will run expensive backup heat when it shouldn't, or refuse to call for cooling at all. A smart thermostat installed without a C wire drops offline and takes the schedule with it. We check the thermostat and the low voltage wiring before condemning anything expensive, because a fair number of no heat and no cool calls end right there.

• Thermostat screen blank, frozen or stuck rebooting
• Smart thermostat installed with the wrong heat pump settings
• New thermostat wired without a C wire and dropping off the network
• Thermostat reading a different temperature than the room really is
• System won't switch over from heat to cool with the season
• Zone damper stuck open so one part of the house gets everything

Heat rises, and most two-story homes here were built with one system trying to serve both floors. Upstairs gets the longest duct runs, those runs sit in a blistering attic, and everybody is sharing the same blower. It's a real problem with real fixes, and none of them start with turning the thermostat down another two degrees. We measure airflow at the registers first, because that tells us whether the problem is the equipment, the duct, or the return.

• Upstairs bedrooms that stay hot no matter where the thermostat is set
• A room over the garage, or an addition, that never cools
• Weak airflow from the vents at the end of a run
• Crushed or disconnected flex duct in the attic or crawl space
• Undersized return air, leaving the system starved and loud
• Balancing dampers or an added return to even the house out
• Ductless mini split installation for the one room nothing else fixes

Coastal humidity is a separate problem from temperature, and cooling alone doesn't solve it. An oversized AC drops the temperature quickly, shuts off, and never runs long enough to pull real moisture out of the air. You end up at 74 degrees and still sticky, with musty closets and condensation on the vents. Sizing, fan settings and sometimes a dedicated dehumidifier fix that. Turning the thermostat lower does not, and it usually makes the short cycling worse.

• House feels damp and smells musty through the summer
• Condensation on windows, supply registers or duct boots
• Mold spots appearing on closet walls or around vents
• Oversized AC that satisfies in ten minutes then shuts off
• Whole-home dehumidifier tied into the existing ductwork
• Crawl space moisture pushing humidity up into the living space

Often straight into your attic or your crawl space. Duct in unconditioned space leaks at the joints, sags between supports, and pulls apart at the register boot, so air is lost before it ever reaches a room. You pay to cool the crawl space while the back bedroom stays warm. Sealing and re-supporting a duct run is usually cheaper than any equipment upgrade, and it's the first thing we look at when a system is sized correctly but performing badly.

• Sealing leaking duct joints with mastic instead of tape
• Reconnecting flex duct that has dropped off a register boot
• Replacing crushed, torn or sagging duct in the crawl space
• Insulating bare or thin-jacketed duct running through the attic
• Adding a supply or return to a room that was never served properly
• Bath fans and dryer vents dumping into the attic instead of outside

It does two things worth paying for. It keeps the coils and the condensate drain clear so the system doesn't quit in the week you need it most, and it catches a weak capacitor or a slow refrigerant leak while it's still a small bill. In this climate a heat pump works close to year round, so it takes more hours of wear than the same unit would somewhere milder. Twice a year is the normal rhythm, once before cooling season and once before heating season.

• Coil cleaning, condensate drain flush and filter change
• Refrigerant charge and airflow check before summer
• Capacitor, contactor and electrical connection inspection
• Defrost cycle test on a heat pump before winter
• Combustion and safety check where we are cleared to work on the appliance
• Freshwater rinse on an outdoor unit sitting near the water