A little clarity before your next HVAC decision.
Understand your home's needs, explore options and bring better questions to your service visit. Free to use. No email required.
What size system might my home need?
Explore heating and cooling load ranges using your location, home size, insulation and windows.
Try HVAC Sizing → 02 / ONE ROOMCould a mini-split suit this space?
Start with a bedroom, home office, ADU or converted garage and see what affects its load.
Try Mini-Split Sizing → 03 / AIRFLOWHow do airflow and duct size connect?
Use known airflow and pressure measurements to explore a round metal duct section.
Try Duct & Airflow → 04 / FILTER CAREChoose a filter. Plan its next check.
Learn about MERV ratings and build a home or business filter inspection schedule.
Explore Filter Care →Free HVAC calculators for Sacramento and surrounding communities
Start with the question you need answered. A whole-home load estimate helps plan central heating and cooling. A mini-split estimate focuses on one space. The duct worksheet explores airflow using known system measurements. Each tool shows its assumptions and provides a way to send the results to Heco for an assessment.
Choose from Rocklin, Roseville, Lincoln, Granite Bay, Sacramento, Folsom, Auburn, Grass Valley and other listed communities. The sizing tools identify their local or nearby weather reference. Exact address, elevation, current building condition and service availability must be confirmed.
These calculators are free to use without registration. They provide preliminary planning information, not a permit calculation, equipment order or installation quote.