Full-system replacement, Denver
Full HVAC system replacement in Denver
Engineered replacement of complete heating and cooling systems for large homes, estates and commercial buildings.
- Insured
- EPA-certified technicians
- Design-build and plan-and-spec
- 24/7 emergency response
Replacing a full HVAC system is the one moment you can fix everything the original installer got wrong. Besties HVAC Solutions replaces complete systems in large homes, estates and commercial buildings across the Denver metro, and we treat every replacement as a redesign: loads recalculated, ducts evaluated, zoning corrected and equipment selected for Denver's altitude.
We do not do swap-and-go. A large home with three furnaces and three condensers, or a building with a row of tired rooftop units, deserves a plan.
Spec sheet
| Building types | Large homes and estates, multi-system residences, office, retail, medical and light commercial buildings |
|---|---|
| Equipment | Furnaces, air handlers, condensers, heat pumps, boilers, rooftop units, VRF |
| Redesign items | Load calculation, duct sizing and static pressure, zoning, return air, ventilation |
| Options | High-efficiency gas, dual-fuel, all-electric cold-climate heat pump, hydronic |
| Scheduling | Phased by system so the building is never without heat or cooling, after-hours for commercial |
Who we work with
Owners of large homes and estates with several aging systems, and owners and managers of commercial buildings planning a full replacement before the next failure.
Why full replacement beats piecemeal
Large homes in Denver often carry two to four systems installed at different times, sometimes by different contractors, with ducts that were never resized as the house was finished or expanded. Replacing one system at a time when each fails locks in the old mistakes. Replacing the whole set together lets us balance capacity across the house, standardize equipment, add zoning where it belongs and design one control strategy.
Commercial buildings face the same math. A full replacement of aging units can be planned around tenants, bid competitively, and scheduled before the next failure rather than after it.
How we approach a replacement
We start with a survey: every piece of equipment, its age and condition, the ductwork and returns, the electrical and gas service, and the comfort complaints. We run a room-by-room or zone-by-zone load calculation, measure static pressure, and then present options from high-efficiency gas to dual-fuel and all-electric, with operating tradeoffs explained. Installation is phased so the home or building keeps heat or cooling throughout.
Altitude and climate
Gas equipment at Denver elevation needs the manufacturer's high-altitude setup, and cooling capacity drops with thinner air. Cold-climate heat pumps can carry most of the heating season, with gas or electric backup for the coldest nights. Hail exposure affects outdoor equipment placement and protection.
Ductwork and returns
New equipment connected to undersized or leaky ducts will never deliver its rated performance. During the survey we measure static pressure and look at return air, which is the most common weak point in Denver homes built before current codes. Where the numbers call for it, we resize trunks, add returns or seal and insulate ducts as part of the replacement, and we explain what each correction does before you approve it.
Planning the timing
The best time to replace is before a failure forces the decision. Spring and fall replacements give more scheduling flexibility, equipment choice and time to coordinate electrical or gas work. For commercial buildings we can phase replacements across budget years, starting with the units in the worst condition.
Incentives and efficiency
Qualifying high-efficiency and heat pump equipment may be eligible for utility or state incentives. Programs change, so we check what currently applies and include the paperwork in the project when the equipment qualifies.
Typical project scope
- Equipment and duct survey
- Load calculation and static pressure testing
- Zoning and control redesign
- Removal and disposal of old equipment
- Gas, venting, condensate and electrical coordination
- Permits and inspections
- Startup, balancing and commissioning
- Warranty registration
What is included
- Written options with operating tradeoffs
- Phased installation, never left without heat
- Protected floors and finishes
- Insured crews and EPA-certified technicians
- Walkthrough and documentation at completion
Our process
- Survey. Every system, duct run and complaint documented.
- Design and options. Loads, zoning and equipment options in writing.
- Phased install. System by system, with protection and cleanup daily.
- Commission. Startup, balancing, controls and walkthrough.
Pricing
| Project | Typical range |
|---|---|
| Whole-home luxury system replacement, large home, multiple systems | $25,000 to $80,000+ |
| Single large-home system (furnace or air handler plus condenser or heat pump) | $12,000 to $25,000+ |
| Commercial rooftop unit replacement, per unit | $15,000 to $60,000+ |
| Commercial building full replacement | Priced per survey and plans |
Typical range, exact pricing after plan review or site walk. Ranges depend on number of systems, efficiency, zoning, ductwork, electrical and access.
Start your HVAC system replacement project
Send drawings, a scope or a site address. We reply with next steps and a time for a plan review or site walk.
HVAC replacement questions
How much does it cost to replace HVAC in a large Denver home?
A typical range for whole-home luxury system replacement is $25,000 to $80,000 or more, depending on the number of systems, zoning, ductwork and equipment. Exact pricing after plan review or site walk.
Should all systems be replaced at once?
Often yes, when systems are similar in age. Replacing together lets us balance capacity, standardize equipment and fix ductwork and zoning in one plan. We can also phase replacement over seasons.
Will we be without heat during replacement?
No. We phase work system by system so the home or building keeps heat or cooling throughout.
Do you replace commercial systems?
Yes. We replace rooftop units, split systems, boilers and VRF in office, retail, medical and light commercial buildings, after hours where needed.
Should we consider heat pumps?
It is worth comparing. Cold-climate heat pumps, alone or in dual-fuel configurations, are a strong option for many Denver buildings, and we price them side by side with gas.