Furnace tune-upsAC tune-ups · Northwest Indiana + Chicagoland
Tune-ups.Before the cold.Before the heat.
A furnace tune-up in the fall catches the small stuff before the first cold night finds it for you. The first freeze here usually lands in late October.An AC tune-up in April or May, before the first hot week. July is a bad time to find out the capacitor’s been going.
About the visit
Ask about
the visit.
Book a furnace or central-air tune-up. Tell us what equipment you have, and ask what the visit includes and what it costs before scheduling.
Furnace
Tell us what furnace you have and ask what the tune-up includes before booking.
Central air
Tell us what air-conditioning equipment you have and ask what the tune-up includes before booking.
When to book
When to
book.
Beat the rush on both ends of the year.
AC tune-up: April or May
Furnace tune-up: September or October
First freeze: usually October 26–28
18°F
The average January low around here.
~1 week
A year at or below zero.
85°F
The average July high.
~2 weeks
A year at 90°F or hotter.
NOAA 1991–2020 normals for Valparaiso and O’Hare.
- Between visits, check the filter once a month while the system’s running hard. Most 1-inch filters need changing every one to three months.
- Shop or building? Rooftop units and unit heaters last longer with tune-ups too. Ask about commercial
Book a tune-up
Book a
tune-up.
Send this and we’ll call to set a day.
No heat or no AC? Call. It's faster than the form, any hour of the day.
Call (312) 934-8329Hablamos español. Llámenos con confianza.
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Book a tune-up.Call the Dragon.
Before the first cold night.Before the first hot week.



