Chiller and boiler repair, maintenance and replacement
The heavy equipment behind large buildings and plants: water- and air-cooled chillers, hot-water and steam boilers, pumps, cooling towers and the piping and controls that tie them together. Serviced by a contractor who has worked on this class of equipment since 2000.
- Heavy equipment experience since 2000
- Licensed C20, C38 & C43
- Serving the entire Central Valley
When the whole building depends on one machine, it needs a contractor who knows it.
A chiller or boiler is not a rooftop unit. It's the central plant for an entire facility — the reason every floor cools, every process line stays in spec, every wing has heat and hot water. When it goes down, the building goes down with it. Most HVAC companies won't touch this equipment. JP Air Conditioning & Heating has been working on it since 2000.
We repair, maintain and replace chillers and boilers in mechanical rooms and plants across Fresno and the Central Valley, along with the pumps, cooling towers, heat exchangers, piping and controls that make up the system. Because we hold C20, C38 and C43 licenses, the refrigeration circuit, the airside and the sheet metal are all handled by the same crew — one contractor, one point of accountability.
Where we work
- Food processing & cold storage
- Hospitals & medical centers
- Schools & campuses
- Hotels & multi-story buildings
- Government & institutional
- Manufacturing plants
- Office towers & data rooms
- Property & facility managers
Chiller repair, maintenance and replacement
Water-cooled and air-cooled chillers — scroll, screw, reciprocating and centrifugal — and everything on the chilled-water and condenser-water loops around them.
Chiller repair
Compressor, motor and starter failures, refrigerant leaks, tube and coil problems, oil and control faults — diagnosed and repaired on site.
Seasonal maintenance
Pre-season startups and shutdowns, refrigerant and oil analysis, tube cleaning, log readings and trend checks that catch efficiency loss before it becomes a failure.
Cooling towers & condenser water
Tower fans, fill, basins and float valves; condenser-water pumps and piping; water treatment coordination to protect tubes and heat transfer.
Pumps, VFDs & hydronics
Chilled-water and condenser-water pumps, seals and bearings, variable-frequency drives, valves, strainers and air separators.
Refrigerant work
Leak detection and repair, recovery, evacuation and charging under our C38 refrigeration license — including older refrigerants and retrofit questions.
Controls & sequencing
Chiller controllers, sensors, safeties and staging, so the plant runs the right number of machines at the right setpoints.
Replacement & retrofit
End-of-life chiller replacement, including rigging, piping modifications and startup, with a plain repair-vs-replace comparison up front.
Down-plant priority
If the plant is down and product, patients or tenants are at risk, say so when you call — those jobs go to the front of the schedule.
Boiler repair, maintenance and replacement
Hot-water and steam boilers for building heat, domestic hot water and process loads. We service the boiler itself — burners, gas trains, ignition and flame safeguards, controls, relief valves, low-water cutoffs — and the hydronic system it feeds: pumps, expansion tanks, heat exchangers, mixing valves and piping.
- Combustion and safety checksBurner tuning, combustion analysis, gas-train and safety-control testing so the boiler runs clean, efficient and safe.
- Heating-season readinessFall startups and inspections scheduled before the first cold week — not during it.
- Hydronic system serviceCirculating pumps, expansion tanks, air separators, valves and piping repairs — including the insulated tanks and loops in older mechanical rooms.
- Replacement done rightSizing, rigging, venting, gas and piping connections, startup and commissioning for new boilers of all sizes.
Signs your plant needs attention
Central plant equipment usually gives warning before it fails. These are the calls we get most from facility managers — and the ones that cost far less when caught early.
- Chiller tripping on safetiesHigh head pressure, low refrigerant, low flow or motor overloads — the safety is doing its job; the cause needs finding.
- Chilled-water temperature drifting upFouled tubes, refrigerant loss, failing compressor or a control problem — and a building that's slowly getting warmer.
- Boiler short cycling or lockoutsFlame-safeguard, ignition, gas-pressure or low-water faults that leave the building without heat until reset.
- Rising gas or electric billsPoor combustion, scaled tubes, dirty condensers and pumps running at full speed all waste energy every hour.
- Pump noise, vibration or leaksSeals, bearings, couplings and cavitation — a scheduled fix now, an emergency later.
- Aging equipment with no service historyIf nobody has logged readings in years, a baseline inspection tells you what you actually have before summer or winter arrives.
From the first call to a plant that runs
Call with what you know
Equipment type, make and tonnage or BTU if you have it, and what it's doing. Down-plant calls are prioritized.
On-site diagnosis
A technician pulls logs, tests electrical, refrigerant, combustion and flow, and identifies the actual fault — not just the alarm.
Options in plain language
What's wrong, what it takes to fix it, and when replacement makes more sense than another repair on aging equipment.
Repair, verify, document
Work is completed, the system is run and verified under load, and you get a rundown of what was done and what to watch.
Scheduled chiller and boiler maintenance for facilities that can't go down
Spring chiller startups and fall boiler startups, mid-season inspections, log readings, tube and coil cleaning, refrigerant and combustion checks, pump and tower service — on a schedule built around your equipment and your operating calendar. Fewer emergency calls, longer equipment life, and a documented service history for your facility.
Chiller & boiler FAQ
What types of chillers do you work on?
Water-cooled and air-cooled chillers with scroll, screw, reciprocating and centrifugal compressors, along with the cooling towers, pumps, piping and controls on the loops around them.
Do you service both hot-water and steam boilers?
Yes. We repair and maintain hot-water and steam boilers for building heat, domestic hot water and process use, including burners, gas trains, safeties and controls, and the hydronic systems they feed.
How often should a chiller or boiler be serviced?
At minimum, a pre-season startup inspection each year — spring for chillers, fall for boilers — plus mid-season checks for equipment that runs hard. Facilities that can't afford downtime typically move to quarterly or monthly service with logged readings so problems show up as trends, not outages.
Can you handle a chiller or boiler replacement, not just repairs?
Yes. We handle sizing, equipment selection, rigging, piping and electrical modifications, startup and commissioning for replacements of all sizes, and we'll give you a straight repair-vs-replace comparison before you decide.
Do you service plants outside Fresno?
Yes. We service central plant equipment across the entire Central Valley — Madera, Clovis, Selma, Visalia, Tulare, Bakersfield and everywhere between. See our service areas.
Other work we do for commercial facilities
Request commercial service or an estimate
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(559) 253-3265Call for service, estimates and PM plans
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1839 W. Olive AveFresno, CA 93728
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