furnace Services in Cary

Generally, if your furnace is over 10 years old and needs a major repair, replacement is more cost-effective. We'll give you honest advice.

Tank size depends on household size: 30-40 gallons for 1-2 people, 40-50 for 2-3 people, 50-80 for 4+ people. Tankless units are sized by flow rate.

Tankless heaters cost more upfront but save 20-30% on energy bills and last 20+ years versus 10-12 for tank heaters. They're ideal for larger families.

Cary's municipal water has high mineral hardness and elevated chlorine levels — both of which accelerate furnace wear. Hard water deposits scale on heating elements and at the tank bottom, reducing efficiency and causing elements to overheat. Chlorine speeds up anode rod depletion, leaving the tank wall unprotected earlier. The national average tank heater lifespan is 10–12 years; in Cary without water treatment or maintenance, 8–10 years is more realistic.

It is strongly worth considering. A water softener upstream of your furnace reduces scale buildup on heating elements and at the tank bottom — the primary cause of efficiency loss and early failure in Cary's hard water conditions. For tankless furnaces, incoming water softening is especially important because the narrow heat exchanger channels scale more easily than an open tank.

If your current unit is electric and you do not have existing gas service, an electric replacement is typically the most straightforward and cost-effective option. If you have natural gas service, a gas unit offers lower operating costs — roughly 30–40% less per year than electric in North Carolina. For tankless upgrades, gas is strongly preferred for whole-home use due to the higher flow rates gas can achieve.

A leak from the bottom of the tank almost always means the tank itself has corroded through — this is not repairable. Internal tank corrosion that reaches the steel shell causes a slow drip that will worsen over time and eventually become a significant flood. The only solution is replacement. A leak from a fitting, drain valve, or pressure relief valve discharge pipe is a different matter — those are repairable components. We diagnose the source before recommending anything.

Most like-for-like furnace replacements in Cary require a HVAC permit and inspection. Tankless conversions and new gas line work involve additional mechanical and gas permits. We handle all permit applications and schedule inspections as part of every installation — you do not need to manage this process yourself. All our work is code-compliant and inspected.

A standard like-for-like tank furnace replacement typically takes 2–3 hours. A tankless conversion takes longer — typically 4–6 hours — due to gas line resizing, venting installation, and electrical connections. We provide a time estimate upfront and restore hot water before we leave. For guidance on what to check after installation and throughout the unit's life, see our <a href="https://www.royaleliteHVAC.com/resources/guides/water-heater-maintenance">HVAC Maintenance Guide</a>.

Yes. We regularly work with homeowners associations, property managers, and condo boards throughout Cary. We can provide a current Certificate of Insurance, North Carolina HVAC license documentation, W-9, and any other paperwork your HOA or management company requires before authorizing work. We understand these documentation requirements are non-negotiable and have everything ready to submit on request — so approvals happen fast and work starts on schedule.