Skip to main content
An open Comfort Pros service van showing labelled compartments of stocked parts, parked at a job site

Case Studies

Real jobs with the actual numbers, including what the competing quotes said.

Interior of a 1962 California bungalow with original plaster walls, representing a Burbank home where three pinhole leaks in eighteen months led to a whole-home PEX-A repipe
Case Study

A 1962 Burbank Bungalow, On Its Third Pinhole in Eighteen Months - The Whole-Home Repipe We Did in PEX-A

Three pinhole leaks in galvanized and soft copper in eighteen months. The fourth one was already forming. We repiped the whole house in PEX-A in four days, with the drywall patched back better than it was.

Read the story
A wall-mounted ductless mini-split head installed high on a stucco wall above a garage workbench, with a slim white line-set cover running down to the outdoor unit
Case Study

Adding AC to a La Crescenta Casita - A Ductless Mini-Split in One Day

A converted garage casita in the Crescenta Valley foothills had no AC, no ductwork, and a tight electrical panel. A single-zone ductless mini-split solved all three - installed in one day, no drywall opened.

Read the story
A restored Pasadena driveway and front yard after a trenchless sewer liner was installed, showing that no excavation was needed for the sewer repair
Case Study

Pasadena Sewer Lateral: We Lined 48 Feet of Pipe Under a 50-Year-Old Driveway Without Digging

A 1968 clay sewer lateral with root intrusion at every joint. The homeowner was told she needed a $22,000 excavation. Cured-in-place lining sealed every joint from the inside and saved the driveway.

Read the story
A hand turning a main water shutoff valve in a utility room, representing the kind of household main shutoff work that goes hand in hand with pressure regulating valve replacement
Case Study

A Glendale Hillside Home With Pressure at 130 PSI - The PRV Replacement That Quietly Solved Three Other Problems

Running toilets, weeping water heater, faucets that wouldn't shut off fully. The actual cause was a pressure regulating valve that had failed years ago. We replaced the PRV and three other problems went away.

Read the story
A wall-mounted tankless water heater installed with a new gas line and condensate drain, representing a properly executed tankless conversion in a Scottsdale residence
Case Study

A Scottsdale Tankless Conversion That Wasn't Sized Right - The Two-Day Rescue Job

Another company installed a 199,000 BTU tankless on a 3/4-inch gas line. Cold showers, error codes, and a vent that wasn't to code. We pulled the unit, resized the gas line, and got the homeowner into a hot shower.

Read the story
An older 40-gallon gas water heater sitting in a garage corner, the burner compartment access panel removed to show heavy white sediment caking the burner tray
Case Study

A Gilbert Water Heater Died at Year 8 - The Hard-Water Math Behind It

An 8-year-old Bradford White in a Gilbert home, dead from sediment. The anode rod was gone, the burner was caked, the tank was leaking. What the homeowner learned about Valley water hardness and what they replaced it with.

Read the story
Thermal imaging camera screen showing the heat signature of a hot-water slab leak, the kind of diagnostic that tells us whether spot repair or reroute is the honest answer
Case Study

Mesa Slab Leak - Why We Rerouted the Line Through the Attic Instead of Opening the Slab a Third Time

The third pinhole in eighteen months on the same hot-water line under the slab. Spot repair would have been the fourth jackhammer. Overhead reroute abandoned the under-slab run and added twenty years.

Read the story
Thick grease buildup coating the inside of a kitchen drain line as seen on a sewer camera monitor, the kind of cause a cheap drain clearing would never have identified
Case Study

The $49 Drain Special That Cost a Chandler Homeowner Three Service Trips and a Camera Bill

A cheap drain clearing cleared the blockage but missed what was causing it. Six months and three backups later, the actual problem was a clay tile with root intrusion. The $49 special cost more than the right answer would have.

Read the story
Two residential gas water heaters standing in garage corners, representing the same Bradford White model installed in two Sun City homes the same year, one well maintained and one neglected
Case Study

Two Sun City Homes, Same Floor Plan, Same Year Built - Why One Water Heater Is at Year 14 and the Other Died at Year 7

Two 1989 Sun City retirement-community homes on the same block with identical water heaters installed the same year. One lasted 14 years. The other died at 7. The difference was 30 minutes of annual maintenance.

Read the story
A salt-based water softener installed in a residential garage beside a water heater, the kind of installation that determines whether the next water heater actually lasts
Case Study

A Gilbert Homeowner Was About to Be on Her Third Water Heater at Year 12 - We Installed a Softener Instead

Second tank in twelve years, both dead from Phoenix hard water. The third tank was the wrong answer. We measured hardness at 19 grains per gallon, installed a softener, and gave her a tank that will actually last.

Read the story
East Valley single-story home with a bare concrete patio, representing a Mesa slab-on-grade ranch where acoustic detection located an under-slab leak
Case Study

A Slab Leak in a 1970s Mesa Ranch - Acoustic Detection, Two-Hour Repair

Warm spot on the tile floor, water bill that doubled in a month, no visible leak. Acoustic detection found the break under the slab in 90 minutes - trenchless spot repair finished the same day.

Read the story
Exterior water meter and pressure regulating valve assembly on a Phoenix home, the kind of installation point where pressure regulating and expansion tank work begins
Case Study

A Phoenix Home With Water Hammer So Loud It Woke the Baby - The PRV and Expansion Tank Job

Banging pipes every time a faucet or washing machine shut off. The cause was pressure over 100 PSI plus a failed expansion tank on a closed system. We replaced both and the house went quiet.

Read the story
A small casita exterior with a ductless mini-split condenser mounted beside it, representing a properly sized ductless installation for a garage conversion in Glendale
Case Study

A Converted Glendale Garage Casita, Cooled by a Ductless Mini-Split Sized to the Actual Load

A 380-square-foot garage conversion into a casita, with one shared wall to the house and west-facing glass. We ran a Manual J, sized a 9,000 BTU ductless, and got the room to setpoint on the first commissioning test.

Read the story
Interior of a 1953 Arcadia bungalow with original mid-century details, representing a home where original galvanized supply lines had reached end of life
Case Study

An Arcadia Bungalow With Original Galvanized Supply - The Partial Repipe That Saved the Kitchen and Both Baths

A 1953 Arcadia bungalow with original galvanized supply, three pinholes in two years, and a homeowner who did not want a whole-house job. We did a partial repipe in PEX-A from the manifold to the wet rooms - half the cost of a whole-house repipe.

Read the story
A residential gas water heater standing in a garage corner with the burner compartment open, the kind of unit where a thermocouple failure causes a no-hot-water call
Case Study

No Hot Water on Thanksgiving Morning in Tempe - The Thermocouple Replacement That Saved the Holiday

No hot water at 6 AM on Thanksgiving with 14 people coming for dinner. We diagnosed the thermocouple over the phone, walked the homeowner through confirming the part, and had the repair done before the turkey went in.

Read the story
A Queen Creek single-story tract home with an aging condenser unit in the side yard, representing a home where the existing unit was actually oversized for the load
Case Study

A Queen Creek Homeowner Got Four Quotes Ranging From 4-Ton to 5-Ton - We Ran the Manual J and Got 3-Ton

Three of four quotes said the existing 4-ton was right-sized or undersized. The Manual J said otherwise. The new 3-ton 16-SEER variable speed has held up to a Phoenix summer on less electricity than the unit it replaced.

Read the story
Plumbing technician using acoustic leak detection equipment with headphones, the kind of gear that located a Calabasas slab leak in 70 minutes without opening the floor
Case Study

A Calabasas Hillside Home With a Slab Leak We Located in 70 Minutes From Acoustic Detection

A 1979 Calabasas bungalow on a concrete foundation with a 30 PSI pressure drop overnight. Acoustic detection found the leak under the family room in 70 minutes. One hole, one patch, one repair.

Read the story
Chandler single-storey home with an ageing condenser unit in the side yard
Case Study

A Chandler Homeowner Was Quoted a 5-Ton Unit for 1,800 Square Feet

Three in-home estimates, three oversized systems. We ran a real Manual J through TrueQuote AI and the number came back very different - along with the invoice.

Read the story
Back to all posts
Comfort Pros HVAC technician greeting a homeowner at the front door
Same-day appointments available

Ready for an Honest Number?

Run a real load calculation online, or call the team in your state. Flat-rate pricing either way, and nobody shows up to sell you something bigger than you need.

Flat-rate pricing, no upsells Parts and labor warranty Licensed in AZ and CA

California team: (818) 690-7951 · Text us: (818) 489-2826