Learn. Compare. Act.
The honest answers we'd give our own family about heat pumps, mini splits, costs, and rebates on the Peninsula — then a clear next step when you're ready.
Understand what's going on
Plain-English guides to heat pumps, costs, panels, and the 2026 rules — no scare tactics, no sales pitch.
How Much Does a Heat Pump Cost in the Bay Area?
Real installed price ranges for the Peninsula, what moves your quote up or down, and how rebates + financing change the math.
8 min read → LearnAre Heat Pumps Worth It in the Bay Area Climate?
Our mild coast is close to a best-case scenario for heat pumps. When they pay off, and the two cases where we tell people to wait.
7 min read → LearnDo I Need to Upgrade My Electrical Panel for a Heat Pump?
Most Peninsula homes don't. How to tell, what a panel upgrade costs if you do, and the load-management option that avoids it.
6 min read → LearnCan I Get a Heat Pump if My House Has No AC Ductwork?
Yes — ductless mini splits were built for exactly this. How they work in older Peninsula homes, ADUs, and additions.
6 min read → LearnWhat Is a Mitsubishi Diamond Contractor?
What Elite Diamond status actually means for your install, your warranty, and the quality of the crew on your roof.
5 min read → LearnCalifornia Heat Pump Rules in 2026: What Title 24 Means for You
What changed on January 1, 2026, what's NOT mandatory, and the honest 2026 status of every major incentive.
8 min read → LearnHow Long Does a Mini Split Installation Take?
Most single-zone installs are a single day. What sets the timeline, and how we keep your home clean start to finish.
5 min read →Weigh your options honestly
Real numbers, side by side — including the cases where keeping what you have is the smarter move.
Gas Furnace vs. Heat Pump for a Bay Area Home
Operating cost, comfort, rebates, and lifespan — side by side — plus when keeping gas is the right call.
8 min read → CompareHeat Pump vs. AC + Furnace: Which Is Better?
One electric system that heats and cools vs. two separate units. The trade-offs that actually matter on the Peninsula.
7 min read → CompareHeat Pump Water Heater vs. Gas Tank Water Heater
Efficiency, hot-water recovery, placement, and rebates compared — and why Plum installs heat pump water heaters only.
7 min read → CompareRepair vs. Replace: When to Fix and When to Upgrade
A simple, no-pressure framework — age, repair cost, and efficiency — to decide without getting upsold.
7 min read → CompareHow to Compare HVAC Quotes (Without Getting Burned)
The line-by-line checklist we'd hand our own family, plus the red flags that mean walk away.
6 min read →Move forward with confidence
Tools and references that turn research into a decision you won't second-guess — and the deep guides for permits and terminology.
- → Free Second Opinion Already have a quote? The owner reviews it free — no obligation.
- → Rebate Hub & Concierge Live 2026 incentive status + we file the paperwork for you.
- → Financing with Wisetack Up to $25,000, soft credit check, decision in seconds.
- → Talk to the Owner Meet Sam for an honest, in-home quote — never a salesperson.
HVAC & Electrification Glossary
Plain-English definitions: SEER2, HSPF2, COP, Manual J, HPWH, SGIP, Title 24, and more.
Open → ReferencePermits & Bay Area Reach Codes
How permitting works across San Mateo & Santa Clara County cities — and why we handle it for you.
Open → Browse the full blog archive →Still have a question we haven't answered?
Call and a real Plum HVAC tech picks up — or send it over and the owner will get back to you. If it helps you, it'll help your neighbors too.