Family-owned in Denver since 1998
Plumbing, heating and air conditioning for the Denver metro. You get a flat-rate price in writing before we touch a thing, a two-hour arrival window we actually keep, and a tech who wears shoe covers.
Rosa is on her wayArriving in your 1–3 PM window
Upfront flat-rate pricing
No hourly meter running while we work. These are our standard prices for a typical Denver home; your tech confirms the exact flat rate on site, and nothing starts until you say yes.
24/7/365 emergency line
Flooding, no heat in a freeze, sewage backing up, no hot water — call and a Brennan dispatcher picks up, not a call center. In the metro we're usually at your door within 60 to 90 minutes.
Smell gas? Don't flip switches or use your phone inside. Get everyone out, then call 911 or your gas utility's emergency number from outside. Call us once you're safe.
Fall offer · ends Nov 30, 2026
Regularly $129
Get ahead of the first real cold snap. Our 21-point safety check covers the heat exchanger, flame sensor, filter and a carbon-monoxide test, so the first chilly night isn't the night it quits.
Replacing a furnace, AC or water heater over $1,500? Choose 0% APR for 12 months or low monthly payments for up to 120 months, with approved credit through our lending partner.
Applying takes about five minutes and starts with a soft credit check that won't affect your score. We take all major credit and debit cards, checks and bank transfers.
Maintenance membership
$19/month or $199/year, cancel anytime
Two tune-ups a year, a plumbing check-up and the perks that matter when something breaks on a Sunday. Members get over $490 of service a year for $199.
Why Denver calls us back
Mike Brennan started with one van in Sunnyside in 1998. Today it's 14 of us and 9 trucks — and his sons still run the jobs. Every tech is background-checked, drug-tested and trained in-house.
Colorado master plumber license, Denver HVAC contractor license, $2M liability coverage and workers' comp on every employee.
Not happy with a repair? We come back and make it right for free within a year. If we can't, we refund that repair.
You get a two-hour arrival window and a text with your tech's name and photo. Late without a heads-up call? $50 off your bill.
1 year parts & labor on repairs. New furnaces, ACs and tankless heaters: 10-year parts and 2-year labor once registered.
Mike BrennanFounder · Master plumber, 34 years
Danny BrennanHVAC lead · EPA 608 certified
Kevin BrennanWater heater & tankless installsRosa DelgadoService plumber · Journeyman
Tyler NguyenHVAC technician · EPA 608
Maureen BrennanDispatch — she'll answer the phoneHow a visit works
Chat here, call, or text. Pick a two-hour window — same day for most weekday calls booked before noon.
About 30 minutes out, you get your tech's name and photo, so you know who's at the door.
We diagnose, then show you written prices on a tablet — often a repair and a replace option. You choose.
Shoe covers, drop cloths, old parts hauled away. We test everything with you before we leave.
Your invoice and warranty land in your inbox, and Maureen calls a few days later to check in.
Reviews
Our water heater died the Friday before Thanksgiving. Called at 7, Rosa was here by 10 and the new tank was in by 2. The price was exactly what they quoted on the phone.
Another company told us our 14-year-old furnace needed replacing. Danny found a dirty flame sensor and a tired igniter, fixed both, and it's run perfectly for two winters. Honest people.
Tankless install was spotless. They pulled the permit, hauled off the old tank, and Kevin showed us how the descale works.
The Comfort Club paid for itself the first winter — no heat on a Sunday night in January, and no emergency fee.
Service area
Our trucks start every morning from Sunnyside and cover Denver plus these suburbs at our regular prices — no trip charge.
Farther out? We go up to 30 miles from downtown for a $49 trip charge.
Questions
Don't see yours? Our assistant answers around the clock, and a dispatcher follows up during office hours.
A diagnostic visit is $89, and it's waived when you go ahead with the repair. Estimates for a new furnace, AC, heat pump or boiler are free. Within our service area there's no trip charge.
No. Every job has a flat-rate price that we show you in writing before any work starts. If the job takes longer than expected, that's on us, not you.
Most weekday calls booked before noon get a same-day two-hour window. True emergencies go to our on-call tech 24/7; in the metro we're usually there within 60 to 90 minutes.
Leave the house right away with everyone in it. Don't switch lights on or off, and don't use your phone until you're outside. From outside, call 911 or your gas utility's emergency line, then call us at (303) 555-0199.
A 50-gallon gas tank costs $2,650 installed and lasts about 8–12 years. Tankless starts at $4,900, never runs out of hot water, frees up floor space and typically lasts 20 years. Kevin can look at your gas line and household size and give you both prices.
A tank swap is usually same-day, about 3–4 hours on site. Tankless installs take 6–8 hours. The Denver permit and haul-away of your old heater are included in the price.
Yes — we service every major brand of furnace, boiler, air conditioner, heat pump, swamp cooler and water heater, tank or tankless.
Anytime. Monthly members ($19) can cancel with no fee. Annual memberships ($199) renew once a year, and we'll remind you before they do.
Book a visit
Tell our assistant what's happening and when works for you. It'll give you the flat-rate price, take your address, and a dispatcher confirms your arrival window by text.
Office: Mon–Fri 7 AM–7 PM, Sat 8 AM–4 PM · Emergency line 24/7
Shop4280 Tejon St
Denver, CO 80211
Office(303) 555-0162
24/7 emergency(303) 555-0199
| Monday – Friday | 7:00 AM – 7:00 PM |
|---|---|
| Saturday | 8:00 AM – 4:00 PM |
| Sunday | Emergencies only |
| Emergency line | 24/7, 365 days |