Yown’s Boiler Service has worked on industrial and commercial boilers in Jacksonville since 1979 and is now part of Thermogenics. From our shop on West 20th Street, our team covers North Florida and South Georgia with 24/7 emergency repair, planned maintenance, parts and rental boilers.
Monthly, quarterly and annual plans, insurance inspections, combustion tuning, steam trap surveys and deaerator inspections.
Emergency boiler and burner repair, retubing, refractory and code welding under our ASME and National Board stamps.
Coils, gaskets, valves, gas trains and burner controls in stock, plus our in-house Pump Rebuild Program.
Thermogenics containerized steam boilers and partner inventory, installed, started and serviced by our team.
Yown’s is a mechanical contractor and a code shop. Our boiler mechanics, ASME code welders and pipefitters diagnose burners, retube firetube boilers, rebuild feedwater pumps and fabricate the piping to tie the work back in.
“I've known Gary and Joe for over 40 years they are true professionals. Working with them is like working with a real person who care about the job your doing.Joe takes the time make sure you have the right part. And with his vast knowledge of Boiler and control systems he is the person that I go to first.m]”
Bill Massey · Google review“Whether Technical Support over the phone, or on-site support, the people that Yown's have always been very helpful, professional, informative, and supportive. Highly recommend service providers.”
Eric Goodrich · Google review“had two pump failures at once..... had both replaced within 2 hours.”
Kevin Corder · Google reviewOur customers use steam for sterilization and humidification in hospitals, cooking and cleaning in food and beverage plants, corrugators in packaging plants, and process heat in chemical and pharmaceutical work. We also service boilers on military installations, government buildings and school and college campuses.
Sterilization, humidification and domestic hot water
Steam for cooking, brewing, distilling and cleaning
Steam for corrugators and paper process lines
Process heat and clean steam for production
Federal and state facilities and installations
Central plants, labs, kitchens and dorms
We run maintenance on monthly, quarterly and annual plans. A monthly plan covers 11 inspections plus the annual inspection; a quarterly plan covers 3 inspections plus an annual visit. On each visit our technician works through burner and combustion checks, flame safeguard and low-water cutoff tests, gauge glasses and controls, feedwater pumps, and your water treatment and blowdown logs. We also get the boiler ready for its annual insurance inspection.
Florida boilers rarely heat buildings. They make hot water, run laundries, feed sterilizers and supply process steam, often all year at light load. A boiler that short-cycles on a small load wastes fuel and wears out burner parts and refractory sooner, so combustion tuning matters here. We set up O2 trim and linkageless controls on Autoflame and Siemens systems where the load justifies it.
Our steam trap surveys find traps that are blowing through or stuck closed. In systems left alone for 3–5 years, 15–30% of traps can fail, and regular surveys can bring that under 5%. We also inspect deaerators, evaluate water softeners, service feedwater pumps and train your operators on daily checks and safe blowdown.
We also clean boilers and burners. Soot on the tube sheet insulates the tubes and pushes stack temperature up, while dust and lint in the burner fan and control panel starve the flame of air and cause nuisance trips. The photos here show our own before-and-after cleaning work.
A boiler outage stops production, and in a hospital it can stop instrument sterilization too. After hours, a technician from our Jacksonville shop heads out. First we get you back on steam safely, then we find out why it failed. That might mean replacing a failed flame scanner or ignition module, clearing a low-water trip, swapping a seized feedwater pump for a rebuilt one, or making a sound temporary repair so the plant can run.
A repeated low-water trip can point back to the condensate return or the deaerator. Flame failures can trace to gas pressure, a fouled burner or a failing control. We write up what we found and what we recommend, so the next repair can be planned.
Our code welding shop handles pressure-part work in-house. With the National Board R stamp we perform repairs and alterations to boilers and pressure vessels, and our ASME S and U stamps cover fabrication of power boiler and pressure vessel parts. That work includes retubing firetube boilers, tube and tube-sheet repairs, and fabricated skids and piping. We also repair refractory: doors, rear walls and burner throats.
We repair Hurst, Cleaver-Brooks, Fulton, Aerco and Thermogenics boilers, along with the burner and control lines we represent. When a repair is no longer worth making, we size and install a replacement boiler, including emergency replacements, and can set up a rental boiler to cover the gap.
We keep a working inventory at the shop: coils, gaskets, valves, process burners, burner controls and gas trains. We service hundreds of boiler brands and models, so parts we don’t have on the shelf, we source through Halmar Boiler Parts, the Thermogenics parts company.
Feed pumps need their own plan. Grundfos lead times run 8–10 weeks for a repair kit and 10–12 weeks for a new pump, which is too long for a plant with one feed pump. Our in-house Pump Rebuild Program covers that gap, and we help customers build a spare parts inventory around their critical items.
Controls & burner brands
We rebuild pumps in-house and can set a backup unit while yours is in the shop, so the plant keeps running during the rebuild.
For a planned shutdown or boiler replacement, call 904-786-1645 early so we can walk the site and plan the piping and crane access.
When a boiler fails beyond a quick repair, or a new boiler is months out, a rental keeps the plant on steam. Through Thermogenics we supply containerized Thermocoil coil-tube steam units from 150 to 500 HP, built to 250 psig MAWP and operating from 70 to 225 psig, firing natural gas, propane or No. 2 oil. For other sizes and types, partner rental providers extend the range from 30 BHP to 2,200+ BHP, including firetube, watertube, hot water and thermal fluid units.
Our team handles the work on site. We walk the site with you, choose where the unit will sit, run the piping tie-in, start it up and service it for as long as it is on rent. Plan the steam connection early, because the distance from the rental to your plant steam line drives the schedule; a 400-foot run can mean 2–3 weeks of piping. Each unit ships in a standard shipping container and travels without oversize escorts, but you will need a crane or a lowboy trailer to set it.
The containerized units below come from the Thermogenics fleet. Larger units are available on request, and partner inventory adds low NOx units, complete boiler rooms, water treatment and feedwater tanks.
| Unit type | Thermocoil coil-tube steam boilers in sea-can containers |
|---|---|
| Size | 150 to 500 HP per unit; larger on request |
| Pressure | 250 psig design (MAWP), operating 70–225 psig |
| Fuel | Natural gas, propane or No. 2 oil |
| Containers | Two-boiler 40 ft, or single 20 ft and 30 ft units |
| Network range | 30 BHP to 2,200+ BHP through Thermogenics partners |
Thermogenics rental specifications. Units are matched to your load from the Thermogenics fleet and partner inventory; call for current availability.
Visit yowns.com
Our team works across North Florida and South Georgia from our Jacksonville shop. St. Augustine is about 50 minutes away and Brunswick about 1 hour. Gainesville is about 1.5 hours, and Savannah and Tallahassee are each about 2.5 hours.
Cities & towns we serve
Industrial Engineering
2501 N John Young Parkway · 407-293-9317
≈ 120 mi away
Matt Marshall & Co.
2249 Bishop Road · 336-292-8477
≈ 400 mi away
Thermogenics
4426 Mt Carmel Tobasco Rd., Suite A · 513-528-0500
≈ 620 mi away
Hartford Boiler Repair Works
44 Cody St. · 860-953-9845
≈ 930 mi away
Case studies and articles from across the Thermogenics group, the engineering and equipment network now behind the Yown's Boiler Service team.
Thermocoil boilers in the same footprint as the old firetubes more than doubled steam generation.
Read more
Worn firetubes replaced with high-pressure Thermocoil boilers, a condensate and deaerator system, and fast-acting controls.
Read more
How sterilization, humidification and lab loads shape boiler selection as hospitals move other loads to low-grade heat.
Read moreYes. Call 904-786-1645 for emergency service nights, weekends and holidays. Emergency service runs 24/7; the office is open 8:00 AM to 5:00 PM ET, Monday to Friday.
We service Hurst, Cleaver-Brooks, Fulton, Aerco, Lochinvar, Thermal Solutions, Unilux, Bryan, Weil-McLain and Thermogenics boilers, from commercial hot-water units to industrial process steam boilers. On the burner and controls side we work on Autoflame, Limpsfield, Industrial Combustion, Power Flame, Honeywell, Maxon and Siemens equipment.
Yes. Our team arranges emergency and planned rentals: Thermogenics containerized steam units, plus partner inventory for other sizes and types. We walk the site, plan the steam tie-in and crane access, start the unit up and service it while it is on rent.
Our shop holds the ASME S and U stamps and the National Board R stamp for repairs and alterations to boilers and pressure vessels. We hold Florida State license CAC029389 as a State certified mechanical contractor. Our technicians carry OSHA, confined space, lock-out tag-out, fall arrest, hot work and arc flash training, and we are set up in Avetta, Veriforce and ISNetworld.
Up to around 250 miles from the branch, across North Florida and South Georgia. That includes St. Augustine, Gainesville, Tallahassee, Savannah and Brunswick, along with towns such as Orange Park, Fernandina Beach, Yulee, Green Cove Springs, Macclenny, Lake City, Palatka and Kingsland.
Yes. Yown’s Boiler Service joined Thermogenics in 2020 and still works under the Yown’s name from our shop on West 20th Street in Jacksonville. Matt Walther is our General Manager. Thermogenics adds rental boilers, manufactured equipment and parts support.
The Florida Division of State Fire Marshal – Boiler Safety Program. It administers Florida’s Boiler Safety Act, Chapter 554 of the Florida Statutes, under rules in Chapter 69A-51, F.A.C., covering construction, installation, inspection and repair, with a focus on boilers in public assembly locations. We prepare boilers for inspection and make code repairs under our National Board R stamp.
It can be. In our hospital steam paper with Thermogenics, winter loads ran 60–95% of steam capacity and summer loads about 5–15%. A large boiler on a small load cycles constantly, and the DOE estimates excessive cycling costs 1–3% of fuel each year. A high-turndown summer boiler, such as 150 bhp at 10:1 for a 100 bhp load, plus O2 trim, is what the paper recommends.
Call 904-786-1645 for emergency repair at any hour, or to book maintenance, parts or a rental boiler. Our Jacksonville team serves plants across North Florida and South Georgia.
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