One system for winter warmth and summer cooling

A heat pump can replace both your air conditioner and much of your heating with a single outdoor unit and an indoor air handler or ductless heads. That efficiency comes from moving heat instead of generating it, and modern equipment does it far better than the heat pumps many people remember. Getting the benefit, though, depends on design choices made before installation begins.

We start with a load calculation for both heating and cooling, using the design temperatures that apply to Alamo, CA. In many climates the heating load is larger and drives the equipment choice. We then look at how heating capacity changes as outdoor temperatures drop. Every heat pump loses some capacity in colder weather, and the temperature at which the heat pump alone can no longer keep up with the home's heat loss is called the balance point. Below that point, backup heat fills the gap. Knowing where that point falls tells us how much backup capacity is needed and what the system will cost to run.

Choosing the right type of heat pump

Ducted heat pumps connect to existing ductwork and are the natural choice when replacing a furnace and air conditioner combination. Ductless mini-split systems use small indoor heads connected to an outdoor unit by refrigerant lines, making them well suited to additions, finished attics and homes without ducts. Cold-climate heat pumps are designed to hold more of their capacity at low temperatures and are worth considering where winters are harsh.

Dual-fuel systems pair a heat pump with a gas furnace. The heat pump handles heating in mild and moderate weather, and the furnace takes over on the coldest days. This setup can make sense when a furnace is still in good condition or when fuel prices favor gas at low temperatures. We compare the options for your home rather than assuming one approach suits everyone.

Efficiency ratings

Heating efficiency is rated by HSPF2 and cooling efficiency by SEER2. Higher numbers mean lower operating costs, but the practical benefit depends on your climate and how many hours the system runs. We explain what each tier means in real terms and present a clear price for each option.

Outdoor unit placement and drainage

Heat pumps produce meltwater during defrost cycles in winter. In areas with snow, we raise the outdoor unit on a stand or wall bracket so it stays above drifts and so melted frost can drain away instead of turning back into a block of ice beneath the coil. We keep the unit clear of roof drip lines and position it for service access and quiet operation near bedrooms.

Installation and commissioning

Refrigerant lines are installed or verified, brazed under nitrogen, pressure tested and evacuated. Electrical circuits are sized for the heat pump and any backup strips. The thermostat is configured for auxiliary heat staging so backup heat runs only when needed. If you already have a heat pump that is struggling, our Heat Pump Repair team can evaluate whether repair is worthwhile first. Homes with leaky or undersized ducts benefit from Duct Sealing before or during installation, since heat pumps deliver air at lower temperatures and are more sensitive to duct losses.

Heat pumps can be installed in Alamo, CA at any time of year, but spring and fall offer the most comfortable window, since the home needs little heating or cooling while equipment is changed over. Installing before winter also gives you a chance to learn how the system behaves, including defrost cycles and backup heat staging, before the coldest weather. If you are pairing a heat pump with an existing furnace, fall installation lets us configure the dual-fuel changeover point with real cold-weather testing soon afterward.