Plumbing, heating, and cooling done right the first time — homes and businesses across Farmington, NM.
5.0 on Google every review is five stars
From a leaking water heater to a new furnace, a full bath remodel to a standby generator — the range on this page is exactly the work in our own photos.
Your go-to plumber in Farmington — the fixes and installs customers call us back for, again and again.
Furnace installs with clean, properly sealed ductwork that keeps the whole house warm through a New Mexico winter.
Cooling and air handling built and connected to run quietly and reliably when the high-desert heat sets in.
New water heaters set, plumbed, and tied in with tidy copper gas-line and supply work you can trust.
Tub and shower surrounds, granite counters, and undermount sinks fitted and finished for homes and businesses.
Whole-home standby generators set on a poured pad and gas-connected, ready for the next outage.
Verbatim from Google. Customers keep coming back to Dennis — helpful, professional, and someone who genuinely cares.
Dennis was so helpful and professional. he fixed my problem and really seemed to care. Would call again without hesitation. My go to plumber.
Dennis is awesome
Thank you!!!
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Alexander's Plumbing, Heating, and Air Conditioning handles the plumbing, heating, and cooling for homes and businesses in Farmington, New Mexico.
The reviews tell the story: customers describe Dennis as helpful, professional, and genuinely caring — the kind of plumber people say they'd “call again without hesitation.” Every one of the company's Google reviews is a five-star rating.
The photos on this page are from real jobs — furnaces and ductwork, water heaters and copper gas lines, tub and shower surrounds, granite counters, and standby generators — a full picture of the work this crew does.
| Monday | 8:00 AM – 4:30 PM |
| Tuesday | 8:00 AM – 5:00 PM |
| Wednesday | 8:00 AM – 4:30 PM |
| Thursday | 8:00 AM – 5:00 PM |
| Friday | 8:00 AM – 4:00 PM |
| Saturday | Closed |
| Sunday | Closed |