Seasonal HVAC Tune-Ups in Commerce City

Northern neighborhoods sit next to open land and ongoing construction, and the south side is close to highways, rail and industrial sites. Both leave filters dirty quickly. We check filter fit, since gaps around a filter let dust bypass it and coat the coil, and measure static pressure before suggesting a higher-efficiency filter. During wildfire smoke, EPA recommends MERV 13 if the system can handle it and keeping the fan running more often.

Houses in Adams City and Rose Hill often have smaller utility rooms, and some furnaces share a metal flue with a water heater. We test draft and carbon monoxide at both appliances, check that combustion air is not blocked by storage, and confirm working CO alarms near bedrooms. At about 5,190 feet, the furnace should be derated roughly 21 percent, and we compare gas pressure with the manufacturer's table.

Average July highs reach the upper 80s and December lows dip into the low 20s here. Book furnace service in September, ahead of the early-October freeze typical in Denver-area records, and AC service in April or May, before the first 90-degree stretch.

Electric service is from United Power or Xcel Energy depending on your address, and gas is Xcel. Our annual tune-up checklist shows what each visit includes.

Outdoor units in Commerce City face a mix of hail, wind-blown dust and summer heat. The spring tune-up includes a full inside-out coil cleaning, a check of fins and the fan guard after storms, refrigerant pressures and temperatures measured once the coil is clean, a test of the capacitor and contactor, and a look at the line-set insulation, which cracks and falls off in strong sun. Inside, we inspect the evaporator coil and drain pan, flush the condensate line, and confirm the float switch shuts the system off if the drain backs up.

Original builder equipment in Reunion is out of its manufacturer warranty by now, but newer replacements are not. Manufacturers such as Trane offer longer parts coverage only when equipment is registered within 60 days of installation, and parts-only coverage does not pay for labor. Keep registration confirmations and tune-up invoices together so a claim is simple.