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Heat Pump Installation in Los Altos Hills, CA

The short answer

A heat pump can replace both your furnace and air conditioner and works well in the Santa Clara Valley's mild, damp winters and dry summers. A good installation starts with a room-by-room load calculation, a check of your ducts and electrical panel, and a look at current local incentives, since the federal 25C credit no longer applies to new installations.

Many Los Altos Hills homeowners are weighing a heat pump because an old furnace or air conditioner is near the end of its life, or because they want one system that both heats and cools. PrimeBreeze HVAC Repair Service installs heat pumps for homes in the 94022 ZIP code from our base in San Jose, about 11 miles east. This page covers what a heat pump installation involves for homes here, what to check before you commit, and how the current rules and incentives fit in.

Why heat pumps suit Los Altos Hills homes

The Santa Clara Valley has a Mediterranean climate. Winters are mild and damp, and summers are dry. Inland and southern parts of the valley run noticeably hotter in summer than areas near the Bay. A heat pump handles both conditions with one piece of outdoor equipment, moving heat into the house in winter and out of it in summer.

Homes in Los Altos Hills vary widely in size, layout and age. Some have long duct runs, additions built at different times, or rooms that sit on different levels. Those details matter more to comfort than the brand of equipment, so we plan the system around the house you actually have.

What we check before recommending a system

We do not size a heat pump by matching the tonnage of your old equipment. Older systems were often oversized, and an oversized heat pump cycles on and off, controls humidity poorly, and wears faster. Before we recommend anything, we look at the whole house.

  • A room-by-room heating and cooling load calculation based on insulation, windows, orientation and ceiling heights
  • Duct condition, sizing and leakage, especially in attics and crawlspaces
  • Electrical panel capacity and whether a dedicated circuit or panel work is needed
  • Outdoor unit placement, including clearance, drainage, noise toward bedrooms and neighbors, and access for service
  • Whether a ducted system, ductless mini-splits, or a mix makes the most sense for additions or rooms the ducts do not reach well

What installation day looks like

Most ducted replacements follow the same order. We remove the old furnace and air conditioner, set the new indoor air handler or coil, mount the outdoor unit on a level pad or bracket, run and test the refrigerant lines, and complete the electrical connections. Then we check airflow at the registers, confirm refrigerant charge, and test heating and cooling modes.

Before we leave, we walk you through the thermostat settings, explain how defrost cycles look and sound in winter, and show you where the filter is and how often to change it. If ductwork needs sealing or resizing, we explain that ahead of time so it is part of the plan, not a surprise.

Bay Area rules and incentives to know about

Under Bay Area Air District Rule 9-4, natural gas furnaces manufactured from 2029 must meet a zero-NOx emission standard. In practice, that points homeowners toward heat pumps when a furnace is replaced after that date. The Air District rules do not require you to replace working equipment. They apply only when an existing furnace or water heater fails or is replaced, so you can plan on your own timeline.

If you are also thinking about a heat pump water heater, note that the zero-NOx date for small water heaters under Rule 9-6 was set for 2027, and the Air District Board is considering amendments in November 2026 that could delay it. Check the current rule before planning that replacement.

The federal Energy Efficient Home Improvement Credit (25C) covered qualifying heat pumps placed in service before December 31, 2025. It is not available for installations after that date. You can still check BayREN and your local clean energy provider for heat pump and electrification incentives. Amounts and availability change by funding cycle, so we confirm the current offer before including it in any quote.

Serving Los Altos Hills and nearby cities

Along with Los Altos Hills, we install heat pumps in Palo Alto, Los Altos, Mountain View, Cupertino and Sunnyvale. If you are comparing options, we are glad to visit, look at your current system, and explain what a heat pump would change in your home before you decide.

More services in Los Altos Hills

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What to expect

How a visit goes

  1. Diagnosis first

    We test and inspect before we recommend anything, so the repair addresses the actual fault and not just the symptom you noticed.

  2. Clear options, your decision

    When there's more than one reasonable path, such as repair now versus replace later, we lay out the tradeoffs and let you choose.

  3. Straight answers on rules and incentives

    We explain how local appliance rules affect your plans and check current incentive programs before quoting them, because those programs change.

FAQ

Common questions

Don’t see your question? Call (669) 286-3980 and we’ll talk it through.

Will a heat pump keep my Los Altos Hills home warm in winter?

Yes. Winters in the Santa Clara Valley are mild and damp, which is well within what a properly sized heat pump handles. Correct sizing and sound ductwork matter more than outdoor temperature here.

Do I have to replace my gas furnace because of the Air District rules?

No. The Bay Area Air District rules do not require replacing working equipment. They apply only when a furnace or water heater fails or is replaced.

Can I still get the federal tax credit for a heat pump?

Not for new installations. The federal 25C credit covered qualifying heat pumps placed in service before December 31, 2025. Check BayREN and your local clean energy provider for current incentives instead.

Can I keep my existing ducts?

Often, yes, but we check them first. Leaky or undersized ducts can limit comfort and efficiency, so we inspect them and recommend sealing or changes only where needed.

Will I need electrical upgrades?

Sometimes. We check your panel capacity and circuits during the assessment so any electrical work is planned before installation day.

Is a ductless system an option?

Yes. Ductless mini-splits work well for additions, converted spaces or homes without ducts, and can be combined with a ducted system.

Need Heating or Cooling Help in San Jose?

Tell us what's going on with your system, and we'll set up a visit to diagnose the problem and explain your options.

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