Commercial Refrigeration Services for Food Service, Education & Cold Storage 

Refrigeration is where uptime is measured in dollars per hour. A school cafeteria walk-in that fails on a Sunday night puts Monday breakfast for hundreds of students at risk. A seafood processor’s cold room that trips overnight can compromise a full day’s landed catch. A contract food service kitchen at a corporate campus has an entire operation depending on refrigeration that has to work every meal, every day. A biotech freezer that drifts a few degrees can invalidate a year of research. Dowling Corporation has been keeping commercial refrigeration systems running across New Hampshire, Southern Maine, and the North Shore of Massachusetts since 1961 — because in this trade, the response time is the product. 

Commercial Refrigeration Services We Provide 

Dowling provides full-service commercial refrigeration across every equipment class a New England commercial or institutional operator is likely to run. That includes service, repair, preventative maintenance, and new-system installation. 

• Walk-in coolers and freezers — compressor and evaporator service, door and gasket repair, refrigerant leak detection and repair, drain line and defrost troubleshooting, and full replacement when the shell has outlived the equipment. 

• Institutional and industrial rack systems — parallel rack service on both low-temp and medium-temp circuits for cold-storage plants, seafood processors, and large-scale food service operations. Case controller diagnostics, defrost cycle optimization, and rack rebuilds across most major commercial platforms. 

• Reach-in coolers, prep tables, and display cases — True, Traulsen, Delfield, Beverage-Air, and most other commercial reach-in equipment. Service and full replacement. 

• Ice machines — Hoshizaki, Manitowoc, Scotsman, Ice-O-Matic. Service, water treatment, and full-facility ice equipment planning. 

• Biotech and laboratory refrigeration — ultra-low temperature freezers, blood bank refrigerators, pharmacy compounding refrigeration, and specialty freezers requiring temperature validation and continuous monitoring. 

• Industrial and cold storage refrigeration — warehouse-scale systems, food processing plants, and distribution centers. Compressor, condenser, and evaporator service across the full envelope. 

• 24/7 emergency service — refrigeration emergencies receive priority dispatch, staffed by licensed technicians with refrigeration-specific training. 

Refrigeration Is a Specialized Service Line 

Commercial refrigeration and commercial HVAC share thermodynamics, but the equipment runs colder, harder, and continuously. The refrigerants and pressures differ. The failure modes differ. The compliance framework differs. And the cost of failure is measured in perishable inventory, regulatory exposure, and — for biotech — irreplaceable research. 

At Dowling, refrigeration is one of the specialties our HVAC/R team has built and maintained for more than sixty years. Our technicians carry EPA 608 Universal certification and [confirm CFESA / RSES / manufacturer credentials], and our senior refrigeration techs bring decades of experience across the equipment classes New England commercial and institutional operators actually run. Whether you buy HVAC service, refrigeration service, or both from Dowling, you are working with one team and one point of contact — that’s how HVAC/R has always worked at our shop. 

Industries We Serve 

Food Service 

Contract food service operators, corporate cafeterias, healthcare food service, senior living dining programs, and institutional kitchens all depend on refrigeration that has to work every meal, every day. The stakes are volume — hundreds or thousands of meals a day — and consistency. A walk-in that drifts warm or a prep table that fails at 10 a.m. isn’t just a repair call; it’s a menu decision the food service director has to make on the spot. We service walk-in coolers and freezers, prep-table refrigeration, ice machines, blast chillers, and reach-in equipment for food service operators across our service area. 

Education — K–12 and Higher Education 

School cafeterias, university dining halls, boarding school kitchens, and campus food service programs all run refrigeration under a distinctive set of constraints: fixed meal windows, USDA and state nutrition compliance requirements, tight facility budgets, and buildings that are frequently closed evenings and weekends when equipment tends to fail. We service refrigeration equipment for K–12 districts and higher-education institutions across our service area — walk-ins, reach-ins, prep tables, milk coolers, blast chillers, and ice machines. Our maintenance programs are structured around the academic calendar, with heavier service windows during summer and school breaks when facilities can accommodate deeper work. 

Fisheries and Seafood 

Coastal New England’s seafood industry — from wholesale processors and distributors to fisheries operations along the working waterfronts of Portsmouth, Gloucester, and Portland — depends on refrigeration that holds product at precise temperatures under punishing operating conditions. Salt air, wash-down environments, and 24/7 cold chain requirements create equipment demands most refrigeration contractors rarely encounter. We service walk-in coolers and freezers, blast chillers, ice-plant refrigeration, processing-room cooling, and cold-room installations for seafood operators across our coastal service area, with the compliance awareness (FDA Food Code, USDA seafood HACCP) these operations require. 

Biotech and Life Sciences 

Laboratory refrigeration carries compliance stakes that go far beyond the equipment itself. Ultra-low temperature freezers (ULT), blood bank refrigerators, and USP 797/800 compounding refrigeration all require temperature validation, continuous monitoring, and service documentation that survives a Joint Commission or FDA inspection. Our biotech customers at Pease Tradeport and throughout the regional life-sciences corridor rely on us for both routine service and validated system installation. 

Cold Storage, Food Processing, and Distribution 

Warehouse-scale refrigeration systems, food processing plants, and distribution facilities. This is the heavy end of the refrigeration world — larger compressors, longer runs, higher-stakes uptime, and often ammonia-adjacent or CO2 systems. Dowling supports facilities across the industrial corridors of Southern NH, Southern ME, and North Shore MA. 

Understanding the HFC Refrigerant Phase-Down 

The federal AIM Act, passed in 2020 and now in active phase-down, is systematically reducing the supply of high-GWP hydrofluorocarbon (HFC) refrigerants across the commercial market. That includes several of the refrigerants that commercial refrigeration equipment has relied on for the last twenty years. Newer, lower-GWP alternatives — primarily A2L refrigerants — are being phased in as the replacements. 

For most commercial operators, this doesn’t require immediate action. Existing equipment can continue to be serviced. But it does mean two things worth planning around: 

• Refrigerant costs are rising and will continue to rise. HFC refrigerants are being produced in shrinking quantities each year. Refrigerant leaks on aging equipment are more expensive to correct than they were even three years ago. 

• Replacement equipment will use different refrigerants. When you replace a legacy HFC system today or in the next few years, the new equipment will almost certainly use an A2L refrigerant. That has implications for handling procedures, code compliance, and technician training — none of which are optional. 

Our team is trained and certified on the A2L refrigerants entering the market, and we plan replacement timelines with customers in advance rather than after a leak forces the decision. 

Why Preventative Maintenance Is the Best ROI Decision in Refrigeration 

Preventative maintenance is not a service philosophy. It is the single largest financial lever available to a commercial refrigeration operator. The numbers are consistent across the industry: 

• Systems on a scheduled preventative maintenance plan run 15–25% more efficiently than un-maintained equivalents. On an industrial cold-storage plant or a large-scale food service operation, that’s tens of thousands of dollars a year in energy savings alone. 

• Compressor life on maintained equipment is typically 40–60% longer. Compressor replacement is the single most expensive repair in refrigeration; extending compressor life by even a few years transforms the economics of the equipment. 

• Catastrophic failures — the ones that spoil a walk-in of product overnight — happen at less than half the rate on maintained systems. Insurance carriers know this; some now offer premium credits for documented refrigeration maintenance programs. 

A well-designed maintenance plan for commercial refrigeration covers seasonal condenser and evaporator cleaning, refrigerant charge and pressure verification, defrost cycle inspection, controller and sensor calibration, door gasket and drain line service, electrical tightening, and full temperature logging. Our plans are structured around your equipment and operating hours — a 24/7 cold-storage facility needs a different cadence than a school cafeteria on an academic calendar, and the plans reflect it. 

What to Expect When You Call Us 

1. A real person answers, day or night. (603) 433-1311. 

2. For emergencies, dispatch happens immediately. Refrigeration emergencies are the highest-priority calls in our dispatch queue. 

3. A licensed refrigeration technician arrives in a fully stocked truck, in uniform, with the parts inventory for common failures already on board. 

4. You get a diagnosis, a written estimate before significant work begins, and — when the question is repair versus replace — the math that supports the recommendation. 

5. Documentation reaches you within the week: invoice, service report, refrigerant log, and (for maintenance customers) a full digital service history accessible any time. 

Service Area 

From our headquarters, Dowling’s refrigeration team regularly services commercial customers throughout: 

• Seacoast New Hampshire (Portsmouth, Dover, Rochester, and surrounding towns) 

• Merrimack Valley and Southern NH (Manchester, Nashua, Concord, Salem, Derry) 

• Southern Maine (Portland, South Portland, Sanford, Kittery, York County) 

• North Shore Massachusetts (Salem, Beverly, Peabody, Gloucester, Lawrence, Haverhill, and Merrimack Valley MA) 

We service the North Shore of Massachusetts as part of our regional footprint. Because MA licensing requirements can vary by equipment class, if you’re a Massachusetts operator, call us and we’ll confirm whether your specific equipment is covered under our current scope. In most cases, it is. 

Frequently Asked Questions 

Do you service both HVAC and refrigeration? 

Yes. Dowling has been HVAC/R — heating, ventilation, air conditioning, and refrigeration — since 1961. Whether you buy HVAC service, refrigeration service, or both from Dowling, you are working with one team and one point of contact. 

How quickly can you respond to a refrigeration emergency? 

Refrigeration emergencies are the highest-priority calls in our dispatch queue. When product is at risk, we know the clock is running and we move accordingly — customers on our preventative maintenance plans receive priority dispatch, and non-contract emergency calls are handled in order of urgency. 

Do you service refrigeration for food service operators and institutional kitchens? 

Yes. Contract food service, corporate cafeterias, healthcare food service, and senior living dining programs are all core parts of our refrigeration customer base. We service walk-ins, prep-table refrigeration, blast chillers, ice machines, and reach-in equipment for operators across our service area. 

Do you service refrigeration for schools and universities? 

Yes. We work with K–12 school districts and higher-education institutions across our service area, servicing cafeteria walk-ins, milk coolers, prep refrigeration, blast chillers, and ice machines. Our education-sector maintenance programs are structured around the academic calendar, with heavier service windows during summer and school breaks. 

Do you handle refrigeration for fisheries, seafood processors, and cold-chain seafood operations? 

Yes. Coastal seafood processing, wholesale seafood distribution, and fisheries operations are one of the more demanding refrigeration environments in our service area — salt air, wash-down conditions, and 24/7 cold-chain requirements. We service walk-in coolers and freezers, blast chillers, ice-plant refrigeration, processing-room cooling, and cold-room installations for seafood operators along the coast. 

Do you serve the North Shore of Massachusetts? 

Yes. The North Shore of Massachusetts is part of our regional service footprint. Because MA licensing requirements can vary by equipment class, we recommend calling to confirm whether your specific equipment is covered under our current scope — in most cases it is, and we’re happy to walk through it with you. 

Can you service biotech and laboratory refrigeration equipment? 

Yes. We service ultra-low temperature freezers, blood bank refrigeration, pharmacy compounding refrigeration, and other specialty laboratory equipment. Our biotech service includes temperature validation, continuous monitoring integration, and service documentation that meets Joint Commission and FDA audit requirements. 

What refrigerants do you work with? 

Our team is certified across the full range of HFC refrigerants currently in commercial service, as well as the A2L refrigerants now entering the market under the EPA AIM Act phase-down. All of our technicians carry current EPA 608 Universal certification. 

Do you offer preventative maintenance contracts for refrigeration? 

Yes. Our refrigeration maintenance plans are customized to each customer’s equipment class and operating hours — a 24/7 cold-storage plant needs a different plan than a school cafeteria on an academic calendar. Every plan includes scheduled service visits, priority emergency response, no after-hours premium for plan customers, and full digital service documentation. 

Get a free refrigeration assessment. Call (603) 433-1311 or request an assessment online. A refrigeration technician will walk your facility, evaluate your current equipment condition, identify any risks worth planning for, and put a written recommendation in your hands within a week. No pressure, no surprise pricing.