Tools that show real numbers
No guesswork. Enter your info, see your options, and compare scenarios—all with transparent assumptions you can check and adjust.
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My Plan
Build your upgrade roadmap
Create a now/next/later roadmap that matches your climate, fuel mix, and budget. No login required—export the steps you want to take this year.
- Personalized to your climate zone
- Considers your current fuel costs
- Sequences projects by impact
- Export or save for later
More calculators
Bill Breakdown Estimator
See where your energy goes
Split last year's bills into heating, cooling, water heating, and baseload so you know which upgrades actually move the needle.
- Works with any utility bill
- Shows seasonal patterns
- Highlights biggest opportunities
Insulation & Air Sealing ROI
Estimate payback and savings
Turn your bills into a heating + cooling baseline, then estimate what air sealing and attic insulation could save—using conservative, adjustable assumptions.
- Heating + cooling only (not your full bill)
- Conservative / typical / optimistic ranges
- Before vs after cost visuals
Heat Pump vs Furnace
Compare operating cost & break-even
Plug in your local electric and gas prices and an estimated heating load. Compare annual heating costs and model dual-fuel with a backup furnace.
- Uses your local rates
- Climate-adjusted COP defaults
- Break-even gas price marker
Upgrade Timing Planner
Compare payback windows
See the payback window and comfort impact for each upgrade, sequenced by your climate and fuel costs.
- Side-by-side comparisons
- Accounts for incentives
- Shows break-even points
Thermostat Savings Estimator
Estimate schedule impact
Use your heating and cooling spend to estimate how setbacks and schedules could change costs. Includes conservative ranges and comfort guardrails.
- Heating + cooling focus
- Conservative / typical / optimistic views
- Heat pump comfort watch-outs
Water Heater Options
Compare tank, tankless, and HPWH
Compare operating cost and simple payback for tank, tankless, and heat pump water heaters using your rates and household size.
- Uses your local rates
- Household-size hot water estimate
- Payback relative to a baseline option
How our tools work
We don't hide the math. Every calculator shows its assumptions, sources, and limitations.
Transparent assumptions
Every default value is based on real data. You can see and adjust all assumptions.
Range-based estimates
We show ranges (low/typical/high) because single-point estimates are misleading.
No data collection
Calculations run in your browser. We don't store your inputs or require login.
Not sure which tool to use?
Start with the Bill Breakdown to understand where your energy goes, then use My Plan to build your upgrade roadmap.