Desk
Energy upgrades
You probably opened this because a heat pump quote is sitting on the table, or because the car needs a faster charger and someone mentioned the panel. Either way, don’t start with the outdoor unit.
Start with the house. If the attic is a sieve, a bigger machine just pushes air through the same leaks. The weatherize before the heat pump guide is that order of work. If the breaker box is already full, the 200-amp panel and Level 2 charger pages are the electrical half of the same conversation.
Then read the bid. Two envelopes that both say “heat pump” are not comparable until they share a load, a duct plan, winter capacity, and a clear note on the panel. That markup lives on the quote checklist. Heat pump vs furnace is the earlier decision, when you are still choosing a machine. Geothermal vs air-source is the next fork, once the outdoor box is not enough and someone wants to put pipe in the yard.
Utility money is local and dated. Last year’s federal credit may already be dead. How to check your rebates is the page for that, before you let a salesperson subtract a number that does not exist.
- Geothermal vs air-source: the loop is the extra invoice
An air-source heat pump is an outdoor box. Geothermal is that box plus hundreds of feet of pipe in the yard. EnergySage 2026: about $15,393 for a typical air-source install, $15,000 to $40,000-plus for ground-source. The 25D credit is gone for 2026 jobs.
- Heat pump noise: the 53 dB on the sticker is not the fence
The quiet number on a heat pump bid is a lab rating, not the sound at the bedroom window or the town's meter at the lot line. Here's what that sticker means, why the pad location matters more, and what has to be on the bid before anyone pours.
- Federal 25C expired: what still pays on a 2026 heat-pump bid
Section 25C is done for anything placed in service after 2025. How to file last year's Form 5695, what 25D and 30C also lost, and which dollars can still show up on a 2026 quote.
- How to check your utility rebates before you sign
How to find the actual heat-pump and weatherization rebates on your bill, what DSIRE and ENERGY STAR miss, and which lines have to be on the quote before you treat a discount as real.
- Load calculation (Manual J) in plain English: the number the bid is hiding
What an ACCA Manual J actually measures, why square-footage rules of thumb size the wrong machine, and what has to be on the report before you compare heat-pump bids.
- Heat pump and existing radiators or boilers: keep the piping, or don't
When a heat pump can use the radiators and boiler piping you already have, when steam and 180°F baseboard need a different job, and what has to be on the quote before you kill the boiler.
- Replacing the AC when the furnace is new: condenser, coil, or heat pump
When the outdoor AC dies and the furnace is still young, three jobs get sold as one quote. What a matched coil costs, why a condenser-only swap often fails, and when dual fuel is the real bid.
- Heat pump maintenance: filters, coils, and what defrost actually means
What you change yourself (filters, outdoor rinse, clearance), what a paid visit should measure (airflow, charge, defrost), and when ice on the outdoor unit is normal instead of a failure.
- Home warranty: what the contract excludes
A home warranty is a service contract, not insurance and not a new heat pump. Premiums, per-visit fees, caps, and the exclusions that actually decide whether the quote is worth it.
- Smart thermostat with a heat pump: O/B, aux lockout, and what to buy
What a heat-pump thermostat has to control (reversing valve, aux lockout, dual fuel), what the box costs, and which 24-volt smart stats actually speak that language.
- Air sealing before insulation
Why you seal the attic floor before you blow cellulose, what Angi prices that line at, which holes actually matter, and how to read a bid that tries to skip it.
- Attic insulation payback without the brochure
What an attic top-up actually costs in 2026, which R-value ENERGY STAR wants for your climate, why the federal 25C credit is gone, and how to read a blown-in bid without buying a brochure payback.
- 200-amp panel upgrade cost: swap vs a real service change
Why a 200-amp panel quote can be $1,300 or $4,000, how to tell a box swap from a service upgrade, and what has to be on the bid before you add a heat pump or charger.
- Cold-climate heat pumps: what the spec sheet hides
Why HSPF2 and a 47°F heating number are the wrong winter test, what ENERGY STAR cold-climate actually requires at 5°F, and how to mark up a bid so the machine still heats on your coldest night.
- Dual-fuel heat pump: when keeping the furnace makes sense
When a heat pump plus the gas furnace you already have is the right bid, what outdoor cutoff to write into the quote, and when hybrid is just a cheap outdoor unit on a furnace you did not need.
- Ducted vs ductless heat pump: which quote is the right job
When to reuse the ducts you already have, when wall heads are cheaper than new sheet metal, and how to read both kinds of bids.
- Heat pump operating cost vs gas
How to tell from your own kWh and therm prices whether a heat pump will cut the heating bill, when cheap gas still wins, and what EnergySage's 2026 state table actually assumes.
- Heat pump water heater vs tank: what the swap actually involves
When a hybrid electric tank is worth the extra install, what ENERGY STAR's savings assume, and what has to be on the quote besides the gallon size.
- HVAC filter size and MERV: measure the slot first
How to read the size on the old filter, what MERV 8 vs 11 vs 13 actually catch, and when a thicker cabinet is the upgrade instead of a tighter 1-inch pad.
- Level 2 EV charger types: plug-in, hardwire, and how many amps
How Level 2 home chargers actually differ: 14-50 vs hardwire, 32 vs 48 amps, J1772 vs NACS, and when a dumb metal box is enough.
- Mini-split for one room vs the whole house
When a single wall head is the cheaper job, when a multi-zone quote is really a whole-house replacement, and how to tell those two bids apart.
- Reading SEER2, HSPF2, and EER2 on a quote
What the 2023 efficiency stickers actually measure, why the numbers look lower than old SEER, which federal minimum applies where you live, and what to ask before you pay extra for a higher rating.
- The tools you need to weatherize doors and windows
A kit for door sweeps, jamb weatherstrip, window V-seal, and the attic hatch. When the gap is a product, and when it is a window quote.
- Heat pump quote checklist
Two envelopes that both say heat pump are not comparable until they share a load, a duct plan, winter capacity, and a clear note on the panel.
- Heat pump vs furnace: how to decide
When one outdoor box that heats and cools makes sense, when keeping the gas furnace is smarter, and what to check on the quote before you pick.
- Level 2 charger and panel upgrade cost
The wall box is rarely the expensive line. The electrician's path from the breaker box to where you park is, and a load calculation decides whether you need a new panel.
- Weatherize before the heat pump
Why a leaky attic makes you buy a bigger heat pump, what to seal first, and how to get the HVAC bid sized to the house after the attic work.