High Energy Bills From HVAC in Richmond

High Energy Bills From HVAC in Richmond

Richmond sits in the bay's fog line, so summers stay in the 60s and low 70s and a lot of homes here run little or no AC. That changes where a high bill comes from. When a Richmond customer tells us their energy cost jumped for the same comfort, the cause is almost always on the heating side: a furnace working harder than it should, or heated air leaking out of the ducts before it reaches the rooms.

A bill that has crept up 20 or 30 percent over a season usually points to one degraded part. We see clogged filters choking airflow, failing ignitors that cycle the burner over and over, and duct joints in a vented crawl space that have pulled apart and are heating the area under the floor instead of the house. Any one of those runs the furnace longer for the same comfort.

Richmond's older post-war stock and the Point Richmond historic homes often have original ducts in damp, vented crawl spaces, which is exactly where leakage and disconnected runs hide. We find the leak, seal or reconnect it, and the furnace stops running long cycles to chase a setpoint it could not hold.

Common causes

Leaky or disconnected ducts in the crawl space. Richmond's older homes run ductwork through vented crawl spaces where tape lets go and joints separate over years of damp coastal air. Heated air dumps under the floor and the furnace runs longer to compensate. We pressure-test the ducts, find the leakage percentage, and seal joints with mastic or reconnect what has pulled apart.

Clogged or wrong-size filter. A filter packed with months of dust starves the blower, so the furnace runs longer for the same heat and the bill climbs. We check the filter, confirm it is the right size and not over-restrictive, and show you the airflow difference on the gauges before and after.

Failing furnace ignitor or flame sensor causing short cycles. On older furnaces the ignitor or flame sensor degrades, and the burner lights, drops out, and relights repeatedly. Each restart burns gas without delivering a full heat cycle. We test ignition and sensor microamps and replace the worn part so the furnace completes full, efficient cycles.

Aging low-efficiency furnace running constantly. An 80-percent furnace from the 1990s simply costs more per BTU than current equipment, and as it ages its heat exchanger and burners lose efficiency further. We measure combustion and runtime, and if the math favors it we put a heat pump conversion on the estimate, since Richmond winters never stress a heat pump.

Dirty blower or coil restricting airflow. A blower wheel caked with dust or a furnace's coil loaded with debris forces the system to run longer to move conditioned air. We inspect both and clean them, then re-read the temperature rise across the furnace to confirm it landed back in the manufacturer's range.

How we diagnose it

• Pull and read the filter, then measure static pressure to see how hard the blower is fighting to move air.
• Pressure-test the duct system and report leakage as a percentage, with the worst leaks identified by location in the crawl space.
• Check furnace runtime and combustion: ignitor, flame sensor, burners, and temperature rise across the heat exchanger.
• Inspect the blower wheel and coil for buildup that quietly raises runtime.
• Lay out the numbers on the written estimate so you can see whether a repair or a heat pump conversion is the better spend.

$75 diagnostic, credited toward any repair over $200. You get a written quote before any work begins.

High Energy Bills From HVAC in Richmond: common questions

Nearby and related

High Energy Bills From HVAC near Richmond: Berkeley · Oakland .

This is usually a ac repair in Richmond job. See our ac repair overview or the Richmond service area.