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Jack Downing

Jack Downing

Senior Service Specialist

Rating

Reviews

LICENSES: GAS SERVICE

Having grown up in the family business, Jack officially entered the trades and joined the GSMS team seven years ago because it simply felt like the perfect fit. Guided by the Golden Rule, Jack appreciates the genuine kindness of both his colleagues and his clients, and he wants every customer to know that the team will always try to do their absolute best on every job. A natural learner who loves to master new skills, Jack stays incredibly active outside of work. You can usually find him renovating his first house, woodworking, playing the guitar and drums, or experimenting with new recipes on the grill and smoker. Depending on the season, he also loves skiing or cycling. Above all, he cherishes the time he spends with his fiancé, Hope, and their Australian Shepherd, Norman. Jack is also a proud member of the Pointer Fish & Game Club.

Name: Jack Downing

Recent Jobs and Reviews

Rated 5.0 out of 5 stars based on 183 customer reviews

Customers say: The overall sentiment across these reviews is overwhelmingly positive, reflecting high levels of customer satisfaction and appreciation. Customers consistently express enthusiasm about the quality of service they received, with recurring praise for professionalism, expertise, and efficiency. A dominant theme throughout is the technical skill and knowledge demonstrated by the service team, with many reviewers highlighting how thoroughly problems were diagnosed and resolved. The interpersonal qualities of the technicians emerge as another strong positive trend, with customers frequently describing them as friendly, personable, pleasant, and respectful. Communication stands out as a particularly valued aspect, with reviewers appreciating clear explanations, patience in answering questions, and being kept informed throughout the service process. Timeliness and punctuality are consistently mentioned as strengths, alongside respect for customers' property and maintaining clean, orderly work practices. Many customers express strong loyalty and trust in the company, with several indicating they are repeat customers or plan to continue using the service. The tone is enthusiastic and grateful, with multiple reviewers offering strong recommendations and expressing genuine happiness with the results. Overall, these reviews paint a picture of a service provider that excels in both technical competence and customer care, creating consistently positive experiences that foster long-term customer relationships.

Job Locations and Reviews

Jack D.
Jack D. Checked in
Well Water test Comprehensive + radon.
Amherst, NH 03031
Review
very courteous, efficient. a pleasure to work with.
Peter - Merrimack, NH 03054
Jack D.
Jack D. Checked in
This proposal outlines the rapid replacement of your existing, failed Fujitsu multi-zone system. Because your current system has suffered a refrigerant leak, we will completely remove the old equipment and replace it with a highly reliable Mitsubishi 2-zone ductless system. Based on our load calculations, your current capacities are perfectly sized for the spaces. We will be installing a standard Mitsubishi heat pump (non-Hyper Heat), which acts as a direct equivalent to your previous system. This will provide you with excellent, reliable air conditioning throughout the summer, as well as highly efficient supplemental heating during the milder spring and fall shoulder seasons. Scope of Work 1. Demolition & Equipment Removal Safe Extraction: We will safely recover any remaining refrigerant, disconnect the electrical components, and completely remove the existing Fujitsu outdoor condenser and the two indoor wall heads. 2. Indoor Equipment (2 Zones) We will supply and install two (2
Merrimack, NH 03054
Jack D.
Jack D. Checked in
Installation of a stand-alone dehumidifier rated for crawlspaces. Unit will be installed in crawl with a condensate pump which will take moisture away from the air and transfer it through a condensate pump to the outside. Outside, a 3/4" PVC drain line will be seen to dispose of the moisture. Unit will sit on blocks. Unit will require 120V standard outlet. We can coordinate with our electrical team, listed as a line item, or you can hire your own electrician to install a outlet for use.
Sanbornton, NH 03269
Jack D.
Jack D. Checked in
Water leak in basement by the water heater was actually from the toilet upstairs. It had a very bad waste water leak at the toilet flange connection. I pulled the toilet and disinfected everything. I then reset the toilet with new hardware and a new gasket. I flushed it multiple times and it is not leaking.
New Boston, NH 03070
Jack D.
Jack D. Checked in
Today I assessed the existing water treatment system. Also, I took a comprehensive + radon water test. Once we receive the results from the laboratory, we will report back to you with the results.
Amherst, NH 03031
Jack D.
Jack D. Checked in
Replace dielectric feed tube on system 2000 hot water tank. Replace anode rod.
Bedford, NH 03110
Jack D.
Jack D. Checked in
Replace tub& shower drain assembly. Replace toilet.
Hudson, NH 03051
Jack D.
Jack D. Checked in
Replace s30 with updated version. Old system likely damaged from power surge.
Candia, NH 03034
Review
Excellent as usual
John - Hollis, NH 03049
Jack D.
Jack D. Checked in
Replace the fan blade and condenser metal top + fan guard that was damaged by ice. These are special order from the factory, so lead time will vary. For the wine cellar, we cannot source / make a custom drain pan. We will provide you with an estimate to install a dedicated Mitsubishi low-static air handler unit in our commercial P-Series unit to deliver reliable chiller cooling. That estimate will be sent over separately.
Hollis, NH 03049
Review
Great service, right on time. Jack did a great job picking out my new faucets.
Lisa - Merrimack, NH 03054
Rebuild wash box valve, replace washing machine braided supply hoses, replace kitchen faucet, replace kitchen sink waste drain, replace kitchen faucet hot + cold valves, replace dishwasher valve, replace dishwasher braided supply hose, replace bathroom faucet, replace bathroom faucet hot + cold supply valves.
Rebuild wash box valve, replace washing machine braided supply hoses, replace kitchen faucet, replace kitchen sink waste drain, replace kitchen faucet hot + cold valves, replace dishwasher valve, replace dishwasher braided supply hose, replace bathroom faucet, replace bathroom faucet hot + cold supply valves.
Jack D.
Jack D. Checked in
Rebuild wash box valve, replace washing machine braided supply hoses, replace kitchen faucet, replace kitchen sink waste drain, replace kitchen faucet hot + cold valves, replace dishwasher valve, replace dishwasher braided supply hose, replace bathroom faucet, replace bathroom faucet hot + cold supply valves.
Merrimack, NH 03054
Look over entire system. Perform AC PM today. Please see the maintenance form for details of servicing. Thank you!!
Look over entire system. Perform AC PM today. Please see the maintenance form for details of servicing. Thank you!!
Jack D.
Jack D. Checked in
Look over entire system. Perform AC PM today. Please see the maintenance form for details of servicing. Thank you!!
Manchester, NH 03104
Jack D.
Jack D. Checked in
Clean condenser. Check dual capacitor at condenser. Check refrigerant charge. Vacuum indoor unit. Clean indoor unit condensate drain and flush with cleaner into pump. Check indoor fan motor capacitor. Check operation of system at end of servicing. All set, thank you!
Nashua, NH 03060
Jack D.
Jack D. Checked in
Replace toilet fill valve.
Nashua, NH 03063
Jack D.
Jack D. Checked in
Add 2 pipe hangers to 4" cast waste line. Replace outdoor spigot. Replace kitchen faucet. Cutout old water main shutoff and replace with ball valve.
Manchester, NH 03103
Jack D.
Jack D. Checked in
Upon taking the unit apart to access the horizontal condensate drain pan beneath the Bosch indoor evaporator coil, our technicians (Qwentin and Jack) discovered the true source of the water leak. Rather than a structural crack, the leak was stemming from a pinhole puncture. During the unit's original installation, a sheet metal screw was accidentally driven through the cabinet and directly into the drain pan. Work Performed: Unit Disassembly & Inspection: Safely opened the equipment casing and slid out the drain pan to locate the exact source of the leak. Drain Pan Repair: Permanently sealed the puncture hole in the primary drain pan using high-temperature, water-resistant silicone. Drain Re-piping: Completely re-piped the condensate drain line and trap to ensure proper water flow. System Leveling: Repositioned the emergency secondary drain pan and properly leveled out the entire system to prevent water from pooling or overflowing in the future. ⚠️ IMPORTANT SYSTEM ADVISORY & REC
Salem, NH 03079
Review
Excellent service, hard working individual, arrived on time
Kathleen - Merrimack, NH 03054
Jack D.
Jack D. Checked in
Replace Kohler shower cartridge under Kohler part warranty. Squealing noise from Lennox outdoor unit was just a loose panel that was vibrating. I tightened the four screws and it went away.
Windham, NH 03087
Jack D.
Jack D. Checked in
AC PM.
Auburn, NH 03032
Jack D.
Jack D. Checked in
Water test, replace 2 filters, and replace dryer vent.
Auburn, NH 03032
Replace flapper. Recommend considering replacement. We will email estimate.
Replace flapper. Recommend considering replacement. We will email estimate.
Jack D.
Jack D. Checked in
Replace flapper. Recommend considering replacement. We will email estimate.
Manchester, NH 03102
Jack D.
Jack D. Checked in
System Diagnosis: During our evaluation of your 2.5-ton system, our Service Specialist Qwentin discovered a heavy presence of refrigerant dye in the system. This indicates a previous contractor likely injected a leak-stop or dye product into the lines. We strongly suspect this thick substance has pooled and clogged the piston (the metering device/screen) at the indoor coil, severely restricting the flow of refrigerant and preventing your system from cooling properly. Proposed Scope of Work: To restore proper flow and operation to your system, we will perform a comprehensive line clearing and recharge process. Refrigerant Recovery: Safely and legally recover all existing, contaminated refrigerant from your system. Piston Cleaning: Open the refrigerant lines at the 2.5-ton indoor coil, remove the piston and screen, and thoroughly clean out any dye, sealant, or debris causing the blockage. Filter Drier Replacement: Remove the old liquid line filter drier and braze in a brand-new drier
Manchester, NH 03104
Review
Jack really took care of me and my home today. Not only did he repair a broken system but when I mentioned my AC wasn’t working correctly, he thought to bring a backup panel so when he saw that was the issue, he fixed it right then and there….no “next visit” needed! I could go on but let me just say how well taken care of I feel. Thanks to the whole team but especially Jack today!
Amy - Moultonborough, NH 03254
Jack D.
Jack D. Checked in
Replace zone bypass board under warranty. Deliver and add salt to softener. Replace steam generator float & fill valve + water & temp sensor. Test operation. Take water test.
Moultonborough, NH 03254
Jack D.
Jack D. Checked in
I am so sorry to hear about the stressful weekend with the system catching fire! Because the 25-year-old compressor suffered a catastrophic electrical failure, it released its refrigerant and caused what we call an "acid burnout" inside the copper pipes. Due to this severe damage and the age of the system, a safe repair is simply not possible. This option upgrades your replacement to a mid-tier, high-efficiency air conditioning system. This equipment operates much more quietly, provides far better summer dehumidification, and will lower your monthly utility bills compared to a standard unit. Even with the upgraded equipment, I have still engineered this quote to reuse as much of your existing, safe infrastructure as possible to help keep your overall costs down. Scope of Work 1. Equipment Removal & New Line Set Demolition: We will safely dismantle and remove your burned-out outdoor unit and the aging air handler up in the attic. Mandatory Line Set Replacement: Because the compress
Merrimack, NH 03054
Jack D.
Jack D. Checked in
Repair 1/2" copper piping. We will come back to replace the bathtub drain and replace the toilet you will purchase.
Hudson, NH 03051
Jack D.
Jack D. Checked in
Diagnosed Corroding fitting on tank. It needs a dialetric ripple- specifically system 2000 special dip tube for proper.operation.
Bedford, NH 03110
Review
Worked with Jack before. He is always professional & does what he has to do to remedy our problem. He’s a great guy & the company should be proud of him.
Steve - Nashua, NH 03064
Jack D.
Jack D. Checked in
Replace flapper, handle, and stop valve.
Nashua, NH 03064
Review
A huge shout out to Jack! Jack is an asset to GSMS family. He was prompt, professional and very thorough with the maintenance of my HVAC system. A bonus is that he was easy to talk to and engaging with conversation about a variety of subjects.
Lorralyn - Londonderry, NH 03053
Review
Great job
Read - Merrimack, NH 03054
Review
We have been very pleased with GSMS services from replacing our central AC & furnace 2 years ago plus a few plumbing issues we have had repaired and regular maintenance services. Jack, Qwentin, Mark and the rest of the team have been very professional and friendly and do a great job the first time and always cleaned up after themselves. They definitely go above and beyond and we highly recommend GSMS and we do. Fair prices as well!
Pamela - Manchester, NH 03109
Review
Excellent, professional, friendly service
Ginger - Hollis, NH 03049
Review
Always willing to help and does an excellent job.
Darlene - Manchester, NH 03109
Review
Great job. Very courteous and friendly.
Aaron - Manchester, NH 03103
Review
Excellent service!
Barb - Merrimack, NH 03054
Review
GSMS is my go to and I have never been let down. Jack was here on time, was professional, courteous, friendly and completed my service quickly and efficiently. Always a great experience when GSMS comes around!
Jared - Hooksett, NH 03106
Review
excellent service, courteous and very fair price
R Carl - Concord, NH 03301
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