Furnace Installationin Golden & Denver Metro
A new furnace is one of the most important investments you will make in your home. A1 Choice Heating & A/C sizes and installs high-efficiency furnaces with the precision and care that 30+ years of Colorado experience demands. No shortcuts, no surprises, just reliable warmth.
When to Replace Your Furnace
The average furnace lasts 15 to 20 years, but Colorado’s altitude and extreme temperature swings can shorten that lifespan. If your furnace is approaching or past the 15-year mark, requires increasingly frequent repairs, or your energy bills have been climbing steadily, it may be time to consider a replacement.
A cracked heat exchanger is the single most critical reason to replace a furnace immediately. This component separates combustion gases from the air your family breathes. If it is compromised, carbon monoxide can enter your living space. We test heat exchangers as part of every diagnostic and will be direct with you if we find a crack.
Newer furnaces also offer dramatically better efficiency. If you are running a furnace with 80% AFUE (Annual Fuel Utilization Efficiency), upgrading to a 95% or 96% AFUE unit means that for every dollar you spend on gas, you are getting 15-16 cents more of actual heat. Over years of Colorado winters, that adds up to significant savings.
Our Installation Process
Every installation starts with an in-home consultation. We inspect your existing ductwork, measure your home, assess insulation quality, and perform a Manual J heat load calculation. This determines the exact BTU capacity your home needs. Getting this right means your new furnace will heat evenly, cycle properly, and run at peak efficiency.
On installation day, we protect your floors and work areas, remove the old equipment, and install the new furnace according to manufacturer specifications and local building codes. We connect to your existing ductwork (or modify it if needed for proper airflow), wire the thermostat, test all safety controls, and verify combustion levels and gas pressure.
Before we leave, we walk you through the new system, explain the thermostat settings, and review the warranty coverage. We also register your equipment warranty and schedule a follow-up if needed. Our goal is to make sure you are completely comfortable with your new system from day one.
What to Expect From a New Furnace
Lower monthly energy bills from higher efficiency operation
Consistent, even heating throughout every room in your home
Quieter operation with modern variable-speed blower technology
Improved air quality through better filtration and humidity control
Peace of mind from manufacturer warranty and professional installation
Fewer repair calls and reduced risk of unexpected breakdowns
Current Special
$500 off a furnace when installed at the same time as a new air conditioner. Contact us for details.
Common Questions
Furnace Installation FAQs
How much does a new furnace installation cost?
Furnace installation costs vary based on the size of your home, efficiency rating, and the complexity of the install. We provide free, no-obligation estimates with transparent pricing. No hidden fees or surprise charges.
How long does furnace installation take?
Most residential furnace installations are completed in one day. We remove the old unit, install the new one, test all safety controls, and verify proper operation before we leave.
What furnace brands do you install?
We install furnaces from all major manufacturers and will recommend the brand and model that best fits your home, budget, and efficiency goals. We are not locked into one brand, so our recommendation is always based on what is best for you.
How do I know what size furnace I need?
We perform a heat load calculation based on your home size, insulation, window quality, and Colorado altitude. Proper sizing is critical — an oversized furnace wastes energy and cycles too frequently, while an undersized unit will struggle to keep up on the coldest days.
Can I save money by bundling furnace and AC installation?
Yes. We currently offer $500 off a furnace when installed at the same time as a new air conditioner. Bundling saves on labor and ensures both systems work together for maximum efficiency.