Johnson's Insulation

Before you hire Johnson's Insulation

In California, HVAC contractors are licensed through the California Contractors State License Board (CSLB). Ask Johnson's 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 Oakland was built in 1953.
• When replacing a furnace or air conditioner in a home built around 1953, 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.
• Oakland 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 Oakland · 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.

More hvac in Oakland

• Hvac Panda
• Hvac Repair Chief
• Element Service Hvac
• Ambient Experts Hvac
• Hvac Orens Services

All hvac in Oakland · Every trade in Oakland