Size matters more than most people expect with a new furnace. An oversized unit short-cycles, overshoots the thermostat, and wears out early, while a correctly sized furnace runs longer and more quietly and uses less fuel. So San Diego HVAC starts every replacement in San Diego with a load calculation, not the number on the old nameplate. From there, the choices come into focus: 80 percent AFUE or a condensing furnace in the mid-90s, single-stage, two-stage, or modulating burners, and a basic PSC blower or a variable-speed ECM motor that saves electricity and smooths out temperature swings. The best fit depends on your home, your ducts, and how long your heating season lasts, and you will be living with it for the next twenty years.
Most of our service calls are for Furnace Repair. If something has stopped working, start there.
Warning Signs for Furnace Installation
Recognizing the warning signs early can save you time and money. Keep an eye out for the following clues:
- Service calls that come more often and cost more every year
- You are upgrading your cooling system and the aging furnace would hold it back
- Recurring booms at startup, soot, or rust despite regular service
- A blower so noisy you have to raise your voice when it runs
- The furnace you have is fifteen to twenty years old or more
- A cracked heat exchanger has been found, ending the repair conversation
- Paying more to heat a house that never gets comfortable
- Rooms the heat never reaches, wide temperature swings, or constant short cycling
Don't Wait for a Total Failure
Left unchecked, even a small fault or temperature swing often signals a system working its way toward a breakdown. If you notice any of these signs, call (619) 313-5467 for a prompt inspection.
