As a third-generation, family owned company, RESSAC helps San Francisco, CA building tenants, business property owners and facility managers keep their commercial HVAC & refrigeration systems running.
Read the reviews from our San Francisco, CA commercial customers to learn more about our low-priced, high-quality design, commissioning, installation, maintenance, monitoring and repair work.

Local Reviews
for San Francisco, CA


Greg W.

Greg W.

Dispatched our Bay Area HVAC installation technicians to place a new mini split for an office. Our techs installed a ductless mini-split for the customer's first floor server room. Set up both condenser and evaporator, wired in unit and ran line-set. Installed pump for the drain line and started up system. Will return with some additional piping for drain-line adjustments 3/18.

Near Bryant St, San Francisco, CA 94103
San Francisco, CA - Dispatched our Bay Area HVAC installation technicians to place a new mini split for an office. Our techs installed a ductless mini-split for the customer's first floor server room. Set up both condenser and evaporator, wired in unit and ran line-set. Installed pump for the drain line and started up system. Will return with some additional piping for drain-line adjustments 3/18.
Greg W.

Greg W.

Drop-off and site set-up for HVAC installation, install scheduled for later this week.

Near Bryant St, San Francisco, CA 94103
Greg W.

Greg W.

Near Bryant St, San Francisco, CA 94103
William T.

William T.

Dispatched our San Francisco CA HVAC technician to a retailer on Post Street. Site requested a second opinion inspection of their system, as it had been recommended for replacement by another contractor. Our tech inspected the site and determined that the air handler is indeed in need of replacement, as the housing, drain pan are rusted, there are signs of leaks at the TXV and oil on the line set. No disconnect box found, switch only. Hard ceiling would need to be broken to access AHU for replacement. Will discuss status with customer, as they may need a general contractor for this particular job.

Near Post St, San Francisco, CA 94108
San Francisco, CA - Dispatched our San Francisco CA HVAC technician to a retailer on Post Street. Site requested a second opinion inspection of their system, as it had been recommended for replacement by another contractor. Our tech inspected the site and determined that the air handler is indeed in need of replacement, as the housing, drain pan are rusted, there are signs of leaks at the TXV and oil on the line set. No disconnect box found, switch only. Hard ceiling would need to be broken to access AHU for replacement. Will discuss status with customer, as they may need a general contractor for this particular job.
Mike D.

Mike D.

HVAC maintenance scheduled today at a mobile network provider in San Francisco California. Performed all items per customer checklist except for filters as requested, brushed and cleaned unit coils. No items to report, systems running well.

Near Market St, San Francisco, CA 94105
San Francisco, CA - HVAC maintenance scheduled today at a mobile network provider in San Francisco California. Performed all items per customer checklist except for filters as requested, brushed and cleaned unit coils. No items to report, systems running well.
Rudy M.

Rudy M.

Our commercial HVAC technician returned to complete the comprehensive spring PM at a hardware chain store in San Francisco CA. Filter change and coil cleaning had been completed on previous visit. The tech changed belts on all Lennox package units and recorded multiple minor issues. Deficiencies were quoted to the customer to approve.

Near Bayshore Blvd, San Francisco, CA 94124
San Francisco, CA - Our commercial HVAC technician returned to complete the comprehensive spring PM at a hardware chain store in San Francisco CA. Filter change and coil cleaning had been completed on previous visit. The tech changed belts on all Lennox package units and recorded multiple minor issues. Deficiencies were quoted to the customer to approve.
Rudy M.

Rudy M.

Near Bayshore Blvd, San Francisco, CA 94124