When should I service or replace my HVAC around DC?

December to February, the heating peak

Heating and cooling work has two busy seasons, and one of them runs from December through February. A furnace that has run for weeks without a break quits in the coldest stretch. A heat pump leans on backup heat in the same weeks, and it shows on the electric bill.

If a carbon monoxide alarm sounds, leave the house and call the gas utility before you call anyone else. For a furnace that will not light or keeps shutting off, see furnace repair. For a heat pump that is icing up or never cycles off, see heat pump not heating.

March to May, the quiet months to get ahead

The average last spring freeze in Washington is around April 1. After that the heat is rarely needed and the AC has not been asked for yet, so these are the easiest weeks to book.

Use them for the cooling check, and for the replacement decision if the system is old and failed last summer. In April you compare repair and replacement calmly. In July you do it in a hot house. See the seasonal maintenance checklist and repair or replace.

What is the best time of year to replace an AC?

Around DC, the best time to replace an AC is March to May. You can compare repair and replacement and choose the install date. Early fall, after the cooling rush, is the second best window.

The worst time is the first heatwave, when the old system quits and every HVAC company is booked. If your system is old and struggled last summer, get the replacement price in spring. The estimate is free, and the signs your AC needs replacing are in their own guide.

June to August, when the cooling rush hits

July highs in DC average around 89 to 90 degrees with heavy humidity, and the wettest stretch usually runs from May through July. The first long hot stretch pushes a weak system hardest, and everyone calls the same week.

If the indoor coil freezes, switch the cooling off and leave the fan running to thaw it. Running it frozen risks the compressor. A house that is cool but clammy usually has a system that cools without dehumidifying, which is an indoor air quality question as much as a cooling one. For warm air from the vents, see AC repair.

September to November, the first cold night

Heating calls climb with the first cold snap of fall, and the average first freeze in Washington is around November 12. A furnace idle all summer shows its faults on the first cold night.

Book the heating check in September or October. The point of the visit is the safety inspection and the cleaning, not the filter change you can do yourself. See HVAC maintenance, and if the furnace is already blowing cold, why a furnace blows cold air.

What is the best time of year to buy a furnace?

September and October, or the spring months after heating season ends. The furnace is not needed, so you pick the install date. Buying in January usually means buying the morning after the old one died.

If the furnace is past fifteen years and needed work last winter, have it checked in September and ask for the replacement price beside any repair. If you are also replacing the AC, spring lets you do both together. See what drives the cost of a furnace replacement and furnace installation.

What to settle with any HVAC company before work starts

People want a contractor who shows up on time, keeps them informed, prices fairly up front and does work that fits the house. They complain about mess and start times that keep moving. Settle all of it before anyone opens a panel.

• The date and the time of the visit, confirmed in writing. When we book a visit you get a text with the date, the time and the address.
• The diagnostic fee, told to you when you book and not at the door.
• What failed and why, before any price is agreed.
• On new equipment, the sizing reasoning in writing, worked out from the house and not from the old label.
• Where the old equipment goes and how the floors are left, written into the estimate.
• Who closes any ceiling or wall the work has to open.

We answer every day from 7:00 AM to 7:00 PM, and HVAC service is scheduled for the next day with a real arrival window. Call (240) 695-4415 or request an estimate.