Heat Pump Installation and Repair in Pasadena

Heat Pump Installation and Repair in Pasadena

One system that cools in summer and heats in winter, and increasingly the default replacement when an aging air conditioner finally gives out.

The San Gabriel foothills trap heat against the mountains, so afternoons run hotter than the coastal basin and cooling loads stay high well into September.

What we see most in the San Gabriel Valley

We see undersized returns starving the blower, decades-old ducts in knee-wall attics, and systems fighting a house with almost no insulation in the original walls.

The housing here is unusually old for Southern California. Craftsman and Spanish Revival homes were never designed around ducted air, so a lot of our work is retrofit: tight attics, no chases, and plaster walls nobody wants opened up.

Efficiency Ratings, Explained

Cooling efficiency is measured in SEER2, heat pump heating in HSPF2, and furnaces in AFUE. The cooling numbers changed in 2023 when SEER2 replaced SEER under a tougher test that includes realistic duct static pressure, so a 15 SEER unit and a 14.3 SEER2 unit are roughly the same machine described two ways. California sits in the DOE Southwest region, which is stricter than most of the country: a split system air conditioner under 45,000 BTU has to reach 14.3 SEER2 and 11.7 EER2, and here a non-compliant system cannot legally be installed at all, not merely not manufactured. Systems of 45,000 BTU and above have to reach 13.8 SEER2. Going above the minimum buys you a lower bill, and how quickly that pays back depends on how many hours a year you actually run the system, which is why the honest answer differs between the coast and the valleys.

What Changed With Refrigerant

This changed recently and it affects what you can actually buy. Under the EPA's AIM Act rules, manufacturers stopped building R-410A residential equipment on 1 January 2025, and since 1 January 2026 a new R-410A system can no longer be installed at all. New equipment now uses an A2L refrigerant, usually R-454B or R-32, which carries a much lower global warming potential. A2L means mildly flammable, which sounds alarming and is not: the burn velocity is very low, and it changes how the equipment is built and handled rather than how it behaves in your house. None of this makes your existing system illegal. An R-410A system already in place is fine to keep and fine to service, but R-410A supply is tightening and the price per pound climbs every year, which is worth weighing if you are deciding between a large repair and a replacement. If your system is old enough to still run R-22, that one was phased out in 2020 and is genuinely scarce and expensive.

Rebates and Tax Credits in 2026

Be careful with rebate advice you find online, because most of it is a year out of date. The federal 25C credit that paid up to $2,000 on a qualifying heat pump was ended by legislation signed in July 2025 and does not apply to any system placed in service after 31 December 2025. TECH Clean California closed its single-family heat pump incentives to new reservations in November 2025 and has been waitlist-only since February 2026. What is still real in 2026 is utility money, and in Los Angeles County that depends entirely on who sends your power bill, because several cities here run their own utility with its own separate rebate program. We tell you what you actually qualify for before you buy, and we will not quote you a system on the assumption of a rebate that no longer exists.

Your Building Climate Zone

For Title 24 purposes we work in California building climate zone 9. Pasadena sits in Zone 9 with Burbank and Glendale, the hot inland zone rather than the mild coastal one, which is why equipment specified off a generic Los Angeles assumption tends to come in undersized here. Zones follow the state's reference weather stations rather than city limits, so if your address sits near a boundary the building department's written determination is the one that counts.