Moving beyond “box swapping.” We connect homeowners with HVAC network engineers who implement Dual-Fuel logic, inverter-driven compressors, and duct pressurization testing to validate AFUE ratings.
Most furnace “replacements” are downgrades. If ductwork is leaky, a 98% AFUE furnace is actually less than 80% (real-world efficiency) in the field. True heating modernization requires considering the entire house as a thermal envelope. Our network partners do not guess at equipment sizing; they use ACCA manual J standards with a purpose to ensure the system fits the building’s heat loss profile exactly.
Visit our HVAC Network Services page for a thorough description of our network’s engineering standards and vetting process.
The Engineering Difference: Data-Driven Installation
Factory performance ratings are only useful if engineering is done correctly. Our network partners focus on 3 interrelated metrics to achieve this.
1. Load Calculation vs. “Rule of Thumb”
Most contractors size furnaces based on square footage alone, often installing oversized units that “short cycle.” We analyze insulation values, window solar gain, and air infiltration rates. For example, precise sizing in a recent retrofit of a 1965 brick home lowered the home’s heating load by 39.1%.
2. The “Hybrid Heat” Math
Pairing gas furnaces with electric heat pumps enables “economic balancing.” Switching to heat pumps during milder days (above 32°F) allows our partners to attain a COP of 3.2 as compared to the 0.98 maximum efficiency of a gas furnace operating alone.
3. Ductwork Remediation
A high-static-pressure system cannot operate if supply air leaks into the crawlspace. Our installation protocol incorporates a pre-install duct leakage test. In verified network projects, technicians have resulted in a duct leakage reduction from a Qn of 0.44 to 0.10.
Advanced System Technologies We Implement
We take pride in retrofitting residences with specific architectural constraints, incorporating systems engineered for challenging thermal environments.
| Technology | Best Use Case | Performance Metrics |
|---|---|---|
| Variable-Capacity Gas Valves | Lennox SLP98V or similar | Adjusts flame in 1% increments to hold temps within ±1.5°F (vs ±4°F standard). |
| Inverter-Driven Heat Pumps | Mitsubishi Hyper-Heating (HHI) | Maintains 100% heating capacity down to 5°F and operates efficiently at -13°F. |
| Smart Recovery Thermostats | Lennox iComfort / Honeywell | Uses “Outdoor Air Reset” logic to lower supply temperatures on mild days, preventing standby losses of up to 12% annually. |
Diagnosis Prior to Purchase: Is It Truly Defective, or Just Unclean?
Prior to arranging for system replacement, ensure your existing problems are not a result of a lack of maintenance.
1. The “High Limit” Lockout
If the furnace turns on for 10 minutes, then shuts off, and the house still remains cold, you are most likely experiencing an overheat.
Reason: Either a dirty (MERV 11+) filter or some return vents are blocked, restricting the airflow.
Solution: Replace it with a standard pleated filter and ensure all registers are opened.
2. The “Ignition Retry” Loop
If you hear the inducer motor start (whirring), then a click, but there is no subsequent “whoosh” of burning gas, then:
Reason: most likely, the flame sensor is coated in either carbon or dust.
Action: this is a clean and easy issue, and is a repair, not replacement.
3. Uneven Heating (Hot Basement / Cold Upstairs)
Reason: likely Static Pressure imbalance, instead of a broken furnace
Fix: There often are ways to do this without replacing the heating unit, such as Implementing a variable-speed blower or zoning dampers.
Service Area
We connect homeowners across the Denver Metro area with heating professionals who are licensed, insured, and heating code compliant.
Do you need urgent diagnostics for a system that fails to start? Check out our Emergency Furnace Repair Denver page.
