Northern Insulation

Before you hire Northern Insulation

In California, HVAC contractors are licensed through the California Contractors State License Board (CSLB). Ask Northern Insulation for its license number and check that it is active and in the business's name on the board's website. Look up the license

• The typical home in Santa Rosa was built in 1980.
• When replacing a furnace or air conditioner in a home built around 1980, ask for a load calculation (ACCA Manual J) instead of matching the old unit's size: insulation, windows and duct condition change over the decades, and a correctly sized system runs more efficiently.
• Santa Rosa is heating-dominated, so heating efficiency matters most when you replace a system: AFUE for furnaces, HSPF2 for heat pumps.

Local data for HVAC contractors in Santa Rosa · Licensing boards by state · Which jobs need a permit

Sources: state licensing boards, U.S. Census Bureau (ACS) and NOAA climate normals, as shown on the city page.