Furnace & heating
AC repair
Ductless mini splits
TraneSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateHVAC Company in Monrovia, CA
Dalton Heating & Air handles heating and cooling work across Monrovia, and the homes here shape the job before we even open the toolbox. The housing stock runs from 1920s Craftsman bungalows with original gravity furnaces to foothill builds on steep lots with tight mechanical closets. Summer temperatures at the base of the San Gabriels regularly push past 100°F, and winter nights can dip near freezing, so Monrovia systems need to swing between heavy cooling and real heating. If you need a repair, an honest second opinion, or a full system replacement, call (626) 657-5344, and a live person answers around the clock.
Why Monrovia Homes Are Different
Homes north of Foothill Boulevard sit against the San Gabriel Mountains, and that terrain changes how HVAC work gets done. Many of those hillside and canyon-adjacent properties have steeply pitched roofs, limited attic access, and furnaces squeezed into compact mechanical closets. Replacing a furnace or running new ductwork in those homes often means custom-fabricated transitions and high-efficiency units sized to fit where a standard box will not go. We plan for that from the first visit, not after the equipment shows up.
Down in the flats and through the Historic District, the work takes a different turn. Monrovia has a large stock of early-to-mid 20th-century Craftsman and Spanish-style homes, many still running original floor furnaces or wall heaters with minimal ducting. In older neighborhoods we regularly encounter gravity furnaces and asbestos-wrapped ducting that requires careful abatement and custom sheet-metal work to upgrade to modern forced-air without gutting the home’s vintage character. Newer foothill developments have modern central systems, but the lots are often steep and constrained, which complicates condenser placement and line-set routing. All of this is normal Monrovia work for us, but it is not the kind of thing a flatland checklist handles well.
Styles & brands we work with
Our Main Monrovia Services
The three calls we take most often in Monrovia are for air conditioning that quit in August, furnaces that will not light on a cold January night, and homeowners ready to move off an aging system onto a heat pump. Each has its own page with local pricing and the full breakdown.
AC Repair in Monrovia
When it is 104°F in the foothills and the condenser is dead, speed and accuracy are the whole job. Monrovia summers are dry and hot, and Santa Ana winds push dust and debris into outdoor units, which shortens capacitor and contactor life. We stock common parts across major brands on the trucks, which means many AC Repair in Monrovia calls are finished in a single visit. Every repair is quoted in writing before work starts and backed by a written one-year guarantee.
Heat Pump Installation in Monrovia
Monrovia’s climate is a strong fit for heat pumps because the system covers both the triple-digit summer cooling load and the occasional near-freezing winter night without a separate furnace. On hillside lots the challenge is often space: finding a condenser location that works with the slope, drainage, and setback rules. We size and spec every Heat Pump Installation in Monrovia with a written fixed price, a set install date, and rebate paperwork handled before any work begins.
Furnace Repair in Monrovia
Furnace problems in Monrovia split two ways. Older homes near the Historic District have gravity furnaces or wall heaters that need specialized parts and sometimes custom fabrication. Foothill homes have modern forced-air units that fail on igniters, flame sensors, and blower motors when winter nights drop near freezing. Either way, a Furnace Repair in Monrovia call gets the same terms: written price before work, no overtime charge, and a repair guaranteed in writing for a full year.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Monrovia
Our technicians are factory-trained on the systems Monrovia homeowners actually have: Carrier, Trane, Lennox, and Goodman among them. Trucks carry common parts for these brands, which keeps single-visit repairs realistic. For the full list, see our brands.
See the difference
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AfterPricing for HVAC Company in Monrovia, CA
Here are the ranges we see across Monrovia. Prices are written before work starts, and they do not shift at the door.
| Service | Typical range in Monrovia |
|---|---|
| AC repair | $150 – $650 |
| Furnace repair | $150 – $700 |
| AC installation | $3,500 – $7,500 |
| Tune-up | $80 – $200 |
What pushes a Monrovia job toward the top of a range is usually access: a furnace in a tight foothill closet, ducting that needs custom transitions, or an older home with asbestos-wrapped lines requiring abatement. The Garrison Standard applies regardless of where the price lands: a written quote before any work, a written guarantee on every repair, and a free return visit if the repair fails within the year.
Neighborhoods We Serve in Monrovia
We work across the whole city, from the Historic District up into the foothill streets north of Foothill Boulevard. Response time runs shortest in the central neighborhoods and slightly longer on canyon-adjacent streets with limited access.
- Historic District
- North Monrovia foothills
- Mayflower Village
- Monrovia Canyon Park area
- South Monrovia
Service Area – Cities Near Monrovia
Beyond Monrovia, our crews cover the neighboring San Gabriel Valley communities with the same written-price and written-guarantee terms. We regularly take calls in Arcadia, CA, Duarte, CA, Sierra Madre, CA, and Temple City, CA. Dispatch and scheduling are coordinated from our Los Angeles office, and crews serve Monrovia locally.
Serving Monrovia, CA - Our Local Coverage Area
We’re based in the Monrovia area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About HVAC Company in Monrovia
Same-day response is typical across most of Monrovia, including the Historic District and Mayflower Village. Canyon-adjacent streets north of Foothill Boulevard can add a little time. Call (626) 657-5344 and a live person gives you a straight arrival window.
Replacement and ductwork often require city permits in Monrovia, especially on hillside lots with setback and drainage rules. We handle the paperwork and inspections as part of the job. You get a set install date and a written price before any work starts.
Yes, including gravity furnaces in Historic District homes and asbestos-wrapped ducting that needs abatement. Older equipment sometimes requires custom sheet-metal work to adapt to modern forced-air. We quote that work in writing before beginning.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Monrovia Customers Say
"Thermostat swapped for a programmable one and ducts checked for leaks. The house is more even now."
- Omar H."Good communication, tidy, and disciplined work. Taped off the floor and wiped the unit down."
- Karen J."Installed a heat pump to replace an old oil furnace. Three clear quotes and the install crew was tidy."
- Cheryl B.