HVAC repair and installation in Walnut Creek, CA
OTTER HVAC is based at 2939 Santos Ln in Walnut Creek. This is our home shop — not a dispatch desk in another county. When a Walnut Creek AC quits in a 95°F week, we schedule seven days a week, 7am to 5pm. We do not advertise 24/7 because we do not run a night shift.
A diagnostic visit is a flat $69. We test, document findings, and quote in writing before any repair. New furnace, AC, heat pump, and mini-split installs include a free in-home estimate with load calculation so the system is sized for the house, not a sales quota.
Walnut Creek calls we see most: central AC not cooling upstairs, short-cycling condensers, ignitors and flame sensors on gas furnaces, and heat-pump conversions where a 15-year-old split system is due. Rossmoor-adjacent and Northgate homes often need honest repair-versus-replace math, not a pitched “whole system today.”
Technicians are EPA 608, OSHA, and NATE certified technicians. Public reviews average 5.0 stars across roughly 146 Google and 151 Yelp reviews. Call (650) 900-0440 or book online.
Related: AC repair · Furnace repair · Heat pump installation · Pricing
Frequently asked questions
Do you serve Walnut Creek the same day?
We schedule every day 7am–5pm. Same-day windows happen often — call (650) 900-0440 and we will tell you what is actually open, not a scripted “emergency crew is on the way.”
How much is an HVAC diagnostic in Walnut Creek?
Flat $69. You get documented findings and a clear quote before repair work starts. New installation estimates are free in-home.
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References and credentials
- EPA Section 608
- DOE Energy Saver
- EPA Section 608 refrigerant certification
- U.S. Department of Energy — Energy Saver
Authority sources: EPA Section 608 · DOE Energy Saver