Ac furnace installation cost — Longmont, CO

Last updated: September 24, 2026

What affects the price

Installing a new HVAC system involves several variables that shift the final total. The square footage of your home and the necessary cooling capacity—measured in tons—are the biggest factors. You also have to consider the efficiency rating of the unit, the complexity of your existing ductwork, and whether you need to upgrade electrical or gas lines to accommodate the new equipment. Choosing between a standard single-stage unit or a high-efficiency multi-stage system changes the upfront investment significantly. Exact pricing confirmed free on the call.

About this service

When you install an AC and a furnace together, you are upgrading the entire climate control core of your home. Costs are driven by the specific models selected and the installation requirements for the electrical and gas connections. Because these units must work together, we focus on sizing them correctly to prevent short-cycling and high energy use. Costs vary based on your equipment choices and home size. Exact pricing confirmed free on the call.

Summer installations are common when systems fail under heavy load. If you are struggling with poor cooling or high energy bills, upgrading during the season can provide immediate relief. We focus on rapid deployment to get your air conditioning running efficiently, helping you keep your indoor climate manageable even during the hottest weeks of the year.

Frequently asked in Longmont

Also serving nearby: Boulder · Thornton · Westminster · Arvada · Greeley

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More on this: DOE home heating — system sizing and savings.

Service area details

Serving all of Longmont — population 98,630; about 3,396 residents per square mile across 29.0 sq mi. ZIP codes covered include 80501, 80502, 80503, 80504.

Neighborhoods served in Longmont: Westview, Mountain Ridge, The Peaks, Heritage Village, Plumbrook, Centennial — and every surrounding area.