A MORE COMFORTABLE HOME
See what a better system could change.
Explore your heating and cooling needs, then compare energy savings over the years you own your system. Start here.
Address lookup is not connected in this development preview. Use the sample home or enter your own conditioned square footage and assumptions below.
Address lookup is not connected in this preview. Explore the sample home below.
Roof footprint can include garages, porches, and overhangs. Confirm conditioned area below. Climate and insulation remain sample assumptions.
Your comfort preferences
Your preferred thermostat setting
Your preferred winter thermostat setting
People who live in your home
Estimated energy savings
Savings over 15 years
—Cooling load
Heating load
Monthly loads
Design loads compared with average operating loads in each month, in BTU/h. Dashed lines show design loads; solid lines show operating loads. Uses the sample monthly weather and a representative daily cycle.
Heating load
Cooling load
Your year at a glance
Average operating loads in BTU per hour. Orange shows heating; blue shows cooling. Split month headers show their share of the combined load.
What changes the load?
Bars share one scale. Peak loads are preliminary estimates.
How your windows affect cooling needs
Illustrative window load through a summer design day. Mixed exposure is assumed; the curve is not measured from Google Solar.
Home & savings assumptions
Review the home assumptions Size, insulation & windows
Optional for homeowners. These sample values have a large effect on the estimate.
Design weather
Explore improvements
Keep a starting point, then change insulation or temperatures to compare the same home.
Starting point: sample home with R-22 attic and R-11 walls.
Shifts all monthly outdoor averages. Design-day temperatures above change peak loads only.
Monthly weather assumptions Sample outdoor averages
Savings assumptions Efficiency, rates & lifespan
Example assumes an electric heat pump for heating and cooling. Confirm both efficiency ratings on the same SEER2/HSPF2 basis.
See the load breakdown
How this estimate works
Peak loads use simplified heat transfer, assumed solar gain, air leakage, residents, and duct adjustments. Seasonal costs use a sample monthly temperature profile with a representative daily cycle, not peak load multiplied by operating hours.
Savings compare the starting home and existing equipment with your changed home and proposed equipment. Lifetime savings add the annual differences using the selected energy price growth. This is gross energy savings: installation, financing, maintenance, replacement costs, and discounting are excluded.
Solar data helps describe the roof. It does not establish conditioned floor area, insulation, windows, or HVAC design conditions. This preliminary comparison does not replace a Manual J calculation or select final equipment.
References: Google Solar · DOE seasonal efficiency · EIA seasonal temperatures
YOUR NEXT STEP
Let’s find the right system for your home.
Share your requirements with RJ Sam’s and request an estimate.
Your latest calculations
These values update as you adjust your home and preferences.
Preliminary estimates using your entered home details and assumptions. Final system sizing requires a load calculation.
Send your latest calculation summary with the request form below.
Preliminary sales estimate · sample assumptions until confirmed