Why we write the findings down

If it is not on the ticket, it did not happen.

You should leave a visit with a sentence like “capacitor measured 4.2 on a 7.5 plate,” not “system is old.”

Repair vs replace is math: remaining life, refrigerant type, duct condition, and how the house actually uses the system.

Use this as a field guide to HVAC diagnostic report, then book a visit if the house still misbehaves.

Diagnostic is $69. Install estimates are free in-home with load calculation. We do not quote compressors or full systems over the phone.

We map HVAC diagnostic report to the actual failed part or design limit. Age of the system is a data point, not the diagnosis.

You approve any repair after the findings are written down. Diagnostic visits are a flat $69. New installation estimates are free in-home with a load calculation — not a number invented from square footage on Zillow.

The cheapest AC on Craigslist plus a “we’ll figure ducts later” install is how upstairs rooms never cool.

A company that skips testing on HVAC diagnostic report will skip it on the next call too. We would rather lose a job than install the wrong thing.

Related service page on this site: air conditioner repair. The article you are reading is the explanation; that page is how to book the work.

OTTER HVAC is based at 2939 Santos Ln, Walnut Creek. Lafayette, San Ramon, and Oakland are regular routes, along with the rest of our listed East Bay cities. Hours are 7am–5pm, seven days a week. We do not advertise 24/7 because we do not staff a night shift.

Inland heat (Pleasanton, Livermore, Concord) and marine air (Alameda, Daly City) are different loads. A note written for Lafayette is not automatically right for a fog-belt house. We treat them that way.

Category on this guide: Trust. Primary search phrase: HVAC diagnostic report.

Call (650) 900-0440 or book online. Tell us the city, the symptom in one sentence, and the brand if you know it. If we have a window today, we will say so. If we do not, we will say that too.

Technicians are EPA 608, OSHA, and NATE certified. Public reviews average 5.0 stars across roughly 146 Google and 151 Yelp reviews. That does not replace a test on your unit.

Related service: Air Conditioner Repair. Book a $69 diagnostic or a free install estimate. Hours: 7:00am–5:00pm, seven days a week. Shop: 2939 Santos Ln, Walnut Creek, CA 94597.

Related: All HVAC guides · Air Conditioner Repair · Pricing and $69 diagnostic · Contact OTTER HVAC

Call (650) 900-0440 · Book online · View pricing · HVAC FAQ