Zone 5: Cool Climate

About Climate Zone 5

Climate Zone 5 encompasses cool regions with significant heating demand lasting 5-6 months per year. Winter temperatures regularly drop well below freezing, and extended cold periods are common. Propane furnaces in Zone 5 are a major fuel consumer, running from October through April with peak demand in December through February. Heating accounts for 60-70% of annual propane consumption in this zone. Zone 5 includes many of the most populated states in the Northeast and Upper Midwest, representing a large portion of the national propane market. The concentration of demand in Zone 5 states drives competitive propane pricing and robust dealer networks. Homeowners in Zone 5 have the strongest financial incentive to invest in home energy efficiency, as the payback periods for insulation, air sealing, and furnace upgrades are shorter than in milder zones due to the higher annual fuel savings.

States in Zone 5

The following 14 states fall within Climate Zone 5. The table shows each state's Heating Degree Days, average propane price, and estimated annual propane cost for a standard full-home setup (80K BTU furnace, 40-gallon water heater, cooking range, and clothes dryer).

Heating Efficiency Tips for Zone 5

In Zone 5, heating efficiency is critical. A 95%+ AFUE condensing furnace is strongly recommended. Set programmable thermostats to 68F during occupied hours and 60F during sleep. Ensure ductwork in unconditioned spaces is well-sealed and insulated. Have the furnace serviced annually.

Insulation Requirements for Zone 5

Zone 5 requires R-20 or R-13+5ci walls and R-49 to R-60 ceiling insulation. Additional investments in continuous insulation, triple-pane windows, and basement insulation pay back quickly. Energy audits identify the highest-priority improvements.

Propane Consumption Patterns in Zone 5

Homes in Zone 5 experience dramatic seasonal variation in propane consumption. During peak winter months (December through February), monthly propane usage for heating can be 3-4 times the annual monthly average. A household consuming 2,070.5 gal per year might use 314.8 gal per month during winter and only 70.9 gal per month during summer when only water heating, cooking, and clothes drying require propane. This extreme seasonality makes tank sizing and delivery scheduling critical. Ensure your tank is full entering the heating season and schedule mid-winter deliveries before the tank drops below 25%.

For accurate estimates tailored to your specific state within Zone 5, visit the state pages or use the interactive calculator with your state selected for climate-adjusted results. You can also browse our setup scenarios to find a configuration that matches your home's propane appliance mix.

Other Climate Zones