Homeowner Guides
Straight answers before you buy, and after.
Free tools and guides for Sonoma and Marin homeowners: what a new system should cost, what size you need, which option fits, and how to keep it running.
Start with two free tools
See what a new system typically costs and what size your home needs. No email, no sign-up.
- 8 free guides
- Real prices from our jobs
- Built for Sonoma & Marin homes
What should it cost?
Typical installed prices for furnaces, AC, heat pumps, mini splits, ductwork and water heaters. Slide to your size to compare.
Home sizing check
Find the AC, heat pump or furnace size your home needs, check a quote you already have, and see where your house loses heat.
- 1Answer a few questions
- 2See your size
- 3Check your quote
Not sure which one fits your home?
Side-by-side comparisons, with a simple “if this sounds like you” list to point you the right way.
Quick checks for every season
What to do and when, plus what a professional tune-up covers.
- Every fall · Sep–Oct
Furnace checklist
Getting ready for heating season.
Open the checklist - Every spring · Apr–May
AC checklist
Getting ready for summer.
Open the checklist - Spring and fall
Heat pump checklist
Twice-a-year care for heat pumps and mini splits.
Open the checklist - Monthly look, yearly service
Water heater checklist
Tank, tankless and heat pump models.
Open the checklist
Rather not keep track?
Green Core maintenance plans put your tune-ups on our calendar, so they happen before the season, not after something breaks.
Ready for comfort that just works?
Tell us a little about your home and we'll get back quickly with clear options — no hard sell.