Broomfield CO Heating System Replacement Costs — 1,500–2,000 sq ft

Estimated Read Time: 12 minutes

If you’re pricing furnace replacement for a 1,500 to 2,000 sq ft home, you’ve likely seen confusing numbers. This guide cuts through the noise with real-world furnace replacement cost drivers, specific to Denver’s high altitude and codes. You’ll learn typical price ranges, what is and isn’t included, and how to reduce your total furnace replacement cost without sacrificing comfort or safety.

Why 1,500–2,000 Sq Ft Homes See Wide Price Ranges

Cost varies because homes in this size band include Denver bungalows, Aurora ranches, and two-story Arvada layouts with different duct runs and insulation levels. A properly sized and installed system is critical for comfort and reliability. The biggest drivers are equipment efficiency, installation complexity, code upgrades, and high-altitude requirements.

"Chris was a godsend. He quickly assessed that our existing furnace could be repaired and didn’t need to be replaced. We’re warm again."

High-Altitude Reality Check for Denver Homes

• Denver sits at 5,280 feet above sea level, which affects gas combustion and appliance input. Most manufacturers require high-altitude conversion above roughly 4,500 feet to maintain safe operation and AFUE performance.
• High-altitude orifices or derating guidance is a must for proper setup. Skipping this can lead to poor heat output and reliability issues.

What Size Furnace Do You Actually Need?

• For many 1,500–2,000 sq ft Front Range homes, 60k–100k BTU input is common, but the right size depends on a Manual J load calculation, insulation, window quality, and duct design.
• Oversized equipment short cycles, creates hot and cold spots, and wastes energy. Undersized units struggle on single-digit nights. Correct sizing and airflow design protect comfort and efficiency.

Typical Price Ranges You Can Expect

Every home is unique, but here is a realistic framework for 1,500–2,000 sq ft homes in the Denver metro when work is permitted and inspected:

1. Good: Standard-efficiency replacement (80% AFUE), straightforward swap, no major duct or gas changes
2. • Ballpark installed: $4,800–$7,200
2. Better: High-efficiency 92–95% AFUE, PVC venting, new condensate, smart thermostat
3. • Ballpark installed: $7,200–$10,500
3. Best: Premium 96–98% AFUE, variable-speed blower, improved filtration, zoning-ready
4. • Ballpark installed: $10,500–$14,500+

What changes the number most:

• Duct modifications or repairs for airflow and noise control
• Electrical upgrades, gas line changes, and code corrections
• High-altitude conversion parts and commissioning time
• Adding IAQ accessories like media filtration or a humidifier

"Carlos did an outstanding job fixing my furnace. He was friendly, professional and very skilled."

Itemized Cost Drivers to Budget For

1) Equipment and Efficiency

• Furnace model: single-stage, two-stage, or modulating. Variable-speed blowers are quieter and improve comfort.
• AFUE rating: ENERGY STAR certified gas furnaces in northern states must meet at least 95% AFUE. Higher AFUE costs more upfront but reduces monthly gas bills.

2) Venting and Condensate

• High-efficiency furnaces use PVC venting and produce condensate that must drain properly to a floor drain or pump. Materials and routing add time and cost.

3) Gas, Electrical, and Safety Controls

• Code-compliant gas connections, drip legs, shutoff valves, and leak checks
• Dedicated electrical, proper grounding, and new furnace disconnect if required
• Combustion air and clearances per manufacturer and code

4) Ductwork and Airflow Design

• Sealing or resizing supply/return trunks for static pressure and airflow
• Correct filter rack and high-MERV media cabinet for cleaner air and better coil protection
• Balancing and noise reduction for bedrooms and second floors

5) Thermostat and Controls

• Upgrading to a smart thermostat may require a common wire and proper configuration. It improves comfort and helps verify set-back savings.

6) Permits and Inspections

• Denver and surrounding municipalities require a mechanical permit and final inspection for furnace replacements. Plan for permit fees and scheduling time.

7) High-Altitude Commissioning

• Adjustments per manufacturer for 5,280 ft elevation: high-altitude kit or orifice change, manifold pressure verification, and combustion checks to ensure safe, efficient operation.

What’s Usually Included vs. Extra

Included in a quality install:

• Equipment, basic materials, removal of the old unit, and disposal
• Manufacturer-registered warranty and labor warranty terms explained
• Startup, commissioning, and homeowner orientation

Often extra or situational:

• Duct repairs or modifications beyond a simple reconnect
• PVC venting for high-efficiency models where routing is complex
• Condensate pump if no gravity drain exists
• Electrical upgrades, gas line rework, or code corrections
• New flue liner if remaining equipment needs it

"Carlos Gutierrez inspected my furnace, explained the situation, gave me options, explained discounts, went to get parts, and stayed to make sure my furnace was operating correctly."

How to Choose the Right AFUE for Your Home

• 80% AFUE furnaces may be acceptable where code and venting allow, but they exhaust more heat and offer fewer comfort features.
• 95%+ AFUE models reduce utility spend and usually qualify for better rebates where available. Variable-speed units help even out temperatures in two-story homes.
• Consider lifetime value: energy savings, comfort, noise, and fewer temperature swings often justify a better model in our climate.

Hard facts that matter:

• ENERGY STAR requires ≥95% AFUE for certified gas furnaces in northern states.
• Many manufacturers require routine maintenance to preserve warranty coverage. Skipping maintenance can risk voiding protection and higher repair costs.

High-Altitude, High-Quality: Why Installation Matters Even More Here

At altitude, correct input, gas pressure, and venting are non-negotiable. Golden West performs load calculations, airflow design, venting, gas, and electrical setup as part of a proper install. This is how you get the efficiency you paid for instead of a loud, short-cycling unit.

"These guys were timely, clean, and professional. I strongly recommend their services and plan on using them again."

Real-World Scenarios for 1,500–2,000 Sq Ft Homes

1. 1950s Denver bungalow, 1,650 sq ft, unfinished basement
2. • Existing 80% AFUE unit, leaky ducts, cold bedrooms
   • Upgrades: 95% AFUE, media filter, return improvements, PVC venting
   • Installed range: $8,200–$10,200
   • Result: Quieter operation, even heat, lower bills
2. Aurora ranch, 1,900 sq ft, main level with crawlspace
3. • Existing two-stage but oversize, short cycling
   • Upgrades: Right-sized 95% AFUE modulating with variable-speed blower, smart thermostat
   • Installed range: $10,000–$13,000
   • Result: Stable temps, improved airflow room-to-room
3. Arvada two-story, 2,000 sq ft, bonus room runs cold
4. • Undersized return, noisy supply trunk
   • Upgrades: 96% AFUE two-stage, return upsizing, balancing
   • Installed range: $9,000–$11,500
   • Result: Quieter ducts, better second-floor comfort

Where Homeowners Accidentally Overspend

• Paying for extra BTUs instead of fixing airflow and duct design
• Skipping permits, leading to failed appraisals or code headaches later
• Choosing high-efficiency equipment without budgeting for venting and condensate routing
• Ignoring altitude conversion until the last minute

How to Reduce Your Total Installed Cost

• Ask for two or three right-sized options with clear scope. Price the equipment, labor, code items, and accessories separately.
• Use any available utility rebates for 95%+ AFUE models and consider financing with approved credit to spread the cost.
• Bundle needed duct fixes during the install. It is cheaper than rework later and improves comfort on day one.
• Enroll in a maintenance plan to protect warranties and keep efficiency high.

What You Should See on a Professional Proposal

• Equipment model numbers, AFUE, blower type, and warranty terms
• Detailed scope for venting, condensate, gas, and electrical
• High-altitude conversion steps listed explicitly
• Permit and inspection responsibilities
• Start-up and commissioning checklist
• Line-item pricing for accessories and duct modifications

Signs You’re Getting a Quality Install

• Technician measures static pressure, verifies gas pressure, and checks temperature rise
• Combustion analysis performed when applicable
• Thermostat configured to match staging and blower profile
• Clear explanation of filter type, maintenance schedule, and warranty registration

Why Homeowners Choose Golden West for Furnace Replacement

• We serve Denver, Aurora, Lakewood, Thornton, Arvada, Boulder, Westminster, Centennial, Lafayette, and Castle Rock with licensed, experienced HVAC pros.
• We perform load calculations, airflow design, and high-altitude commissioning on every furnace replacement we install.
• Transparent, upfront pricing with free estimates and financing options available with approved credit.
• One company for HVAC, plumbing, and electrical, which simplifies permits and scheduling.

"Chris was wonderful and fixed our furnace quickly!! Love Golden West!!"

Protecting Your Investment After Install

• Join our VIP maintenance program for scheduled tune-ups, priority service, and reminders.
• Annual maintenance helps keep your furnace within manufacturer specs and maintains warranty coverage.
• A well-maintained high-efficiency unit can hold its AFUE performance better over time, which protects monthly savings.

Special Savings and Priority Care

Join our VIP Maintenance Program for priority scheduling and member-only savings. VIP members receive comprehensive seasonal tune-ups and additional benefits that help protect warranties and reduce emergency costs. Ask our team how membership can lower your long-term ownership cost.

What Homeowners Are Saying

"Chris was a godsend. He quickly assessed that our existing furnace could be repaired and didn’t need to be replaced. We’re warm again and will always make Golden West our first call."
–Heating Service, Denver Metro

"These guys were timely, clean, and professional. I strongly recommend their services and plan on using them again for future needs of my own."
–Boiler Replacement, Denver Metro

Frequently Asked Questions

How much does furnace replacement cost for a 1,500–2,000 sq ft Denver home?

Most projects fall between $7,200 and $10,500 for high-efficiency systems, with simpler 80% swaps from $4,800 to $7,200. Complex duct, venting, or code items can push totals higher.

Do I need a permit to replace my furnace?

Yes. Denver-area municipalities require a mechanical permit and final inspection for furnace replacements. A reputable contractor will handle the permit and coordinate inspections.

What AFUE should I choose in Colorado?

For colder Front Range winters, 95%+ AFUE often delivers the best lifetime value. ENERGY STAR certification in northern states requires at least 95% AFUE for gas furnaces.

Do high-altitude homes need special furnace setup?

Yes. At 5,280 feet, manufacturers often require high-altitude conversion and commissioning steps to ensure safe combustion, correct input, and expected efficiency.

How can I lower my total installed cost?

Request line-item proposals, use available rebates for 95%+ AFUE units, bundle duct fixes during install, and enroll in maintenance to protect warranties and efficiency.

Bottom Line

For 1,500–2,000 sq ft homes in the Denver metro, the true furnace replacement cost depends on efficiency, ductwork, altitude setup, and code items. Choose a right-sized, professionally installed system to ensure comfort and protect your investment.

Ready for a Precise Quote?

Get a free, no-pressure furnace replacement estimate from Golden West today. Call 720-613-8880 or visit https://www.goldenwestph.com/ to schedule. Ask about VIP membership for priority service and savings.

About Golden West

Golden West Plumbing, Heating, Air Conditioning, and Electrical has served Denver since 2002 with licensed, experienced technicians. We deliver honest, upfront pricing, free estimates, and fast same day service. Our team handles heating, cooling, plumbing, and electrical under one roof. We back work with a 100% satisfaction guarantee, offer financing with approved credit, and provide VIP memberships for priority care and savings.