The load
A written calculation, not a match to the failed unit's badge.
Core service
Whole home heat pump installation and replacement
The buyer on this page wants a house system replaced or installed. If you need a tune up, this is the wrong guide.
This is an independent referral guide. It connects homeowners with independent providers and may receive compensation. It is not a licensed contractor and it does not do the work.
A house system, not a service call
San Marcos homeowners usually reach this decision when a heat pump has failed, when a gas furnace and a separate air conditioner are both old, or when an addition never got real conditioning. The work is sizing, air distribution, electrical capacity, a place for the outdoor unit, and a permit at the right counter.
Inland San Marcos is warmer in summer than the coast at Oceanside, and winter nights are cool enough that the heating side matters, especially toward Twin Oaks Valley and the hills. That is a reason to calculate the load. It is not a claim about a specific bill.
- What failed, or why the house is changing systems
- Whether ducts already exist and whether they leak or starve rooms
- Panel capacity and where the outdoor unit can sit
- Noise at bedrooms and at the neighbor's yard
- City of San Marcos versus county jurisdiction
What the bid should explain
The air path
Supply, return, filters, and rooms that never get comfortable.
The electrical
Whether the panel can take the new equipment, without assuming every house needs an upgrade.
The equipment location
Clearance, condensate, line set length, and the sound at the property line.
Keep reading
Ducted replacementKeep a ducted system when the ducts are the right size and in sound condition. Replace or reseal them when they are not.Furnace conversionRetire a gas furnace and a separate air conditioner in favor of a heat pump. The gas line, the ducts, and the panel all belong in the scope.Ductless optionsDuctless heads help rooms the ducts never reached. They are not an automatic whole home answer, and they still need power and a place for the outdoor unit.San Marcos service areaCity neighborhoods and Lake San Marcos.Local guidePermits, the utility, and jurisdiction.
Questions on this service
Should the new unit match the old one's tonnage?
Not by habit. Ask for a room by room load calculation. A nameplate copy can repeat a bad guess.
Does replacement usually need a permit?
A whole home equipment change commonly needs mechanical and electrical permits. Which desk you use depends on whether the parcel is in the city or in the county. This page cannot issue one.
Describe the house system
Include city or county if you know it. Call, text, or open a prefilled text from the estimate form.