Hot Water Heaters

Boil your way to warmth without the drafts and noise

Viessmann Unit
Vitodens 100-W Gas-fired wall-mounted condensing boiler with modulating stainless steel cylinder burner and Inox-Radial heat exchanger surface.

The perfect mix of performance, quality and value, the Vitodens 100-W gas-fired wall-mount condensing boiler is ideal for any home and any budget. With added product features, the new generation of this popular boiler now offers even greater versatility and choice.
Interior of Viessman unit
The benefits at a glance:
  • New! On-demand DHW now on Vitodens 100 with the new CombiPLUS Kit
  • Fits Any Home and Budget with high performance at an attractive price.
  • Outstanding Efficiency of 95.2% A.F.U.E. on all models.
  • Lasting Performance with industry-leading Viessmann made SA240 316 Ti stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV.
  • Low-Emission Combustion with Viessmann made stainless steel MatriX cylinder burner for natural gas or propane. Factory calibrated.
  • Versatile On-Board Boiler Control interfaces with most external controls. Now with integrated 0-10V and OpenTherm® communication ability. Outdoor temperature sensor standard.
  • Greater Venting Flexibility with increased vent length (up to 200’) and multiple venting options
    – Horizontal or vertical sealed combustion coaxial venting (factory supplied).
    – Horizontal, vertical or hybrid sealed combustion double-pipe venting (field supplied).
    – Horizontal or vertical single-wall venting (field supplied).
  • Suitable for Altitude Levels of up to 10,000 ft. / 3000 m.
  • Easy Installation, Service and Maintenance with all pipe connections located at the bottom and serviceable components easily accessible from the front.
  • Extremely Quiet Operation; quieter than most refrigerators.
  • Compact, Lightweight Design and zero clearance to combustibles.
  • Built-in Automatic Frost Protection prevents freeze-up during long shut-off periods.
  • Limited Lifetime Warranty in residential applications.

CombiPLUS Optional, on-demand domestic hot water kit for reliable DHW without a tank

With the new CombiPLUS Kit add on-demand domestic hot water (DHW) to your new Vitodens 100 space heating boiler and say goodbye to your DHW tank. Slightly bigger than a large shoe box, the CombiPLUS Kit installs underneath or beside the boiler and requires only minimal piping and electrical connections.

Featuring stainless steel heat exchanger, pressure bypass valve, DHW temperature and flow sensors, 3-speed pump, 3-way diverting valve, and Low Lead Content Certification*, the CombiPLUS Kit provides nothing but reliable, high-quality DHW day after day.

The benefits at a glance:
  • All the benefits of a Vitodens 100 boiler, plus on-demand domestic hot water (DHW) with CombiPLUS Kit.
  • DHW at the snap of your fingers all day long! Up to 3.6 GPM. **
  • Energy-efficient and low-cost due to on-demand indirect-fired DHW production.
  • Reduced energy waste with fully-modulating input from boiler.
  • Space-saving and lightweight wall-mount design. More compact than any other hot water heater.
  • Virtually silent DHW production.
  • Easy installation with all piping and electrical connections included.
  • Quality you can count on! Stainless steel heat exchanger, built-in pressure bypass and 150 psig working pressure rating.
  • Reliable and even DHW supply with built-in DHW temperature and flow sensors.
  • Complete space / DHW heating management by boiler control, powerful built-in 3-speed pump and diverting valve.
  • Great fit for apartments, condos, cottages, single-family homes, or installs where space is at a premium.
* Certified to NSF/ANSI 372 for Low Lead Content. ** At a 63 °F maximum temperature rise with Vitodens 100, WB1B-35.
Laundry room with a Viessmann unit installed

Contact Dahlquist Today
at (715)361-2798 or Email Us

GARN advantage
Looking for a wood heating system that delivers what it promises: a creosote free burn; proven high efficiency; ease of use; safety; and longevity? Well…you just found what you have been looking for in GARN® WHS Smokeless Wood Heat equipment.

GARN® WHS non-pressurized wood fired hydronic heaters may be located within the building to be heated or remotely in a small shed. GARN® WHS wood heating equipment interfaces easily will all types of hydronic delivery systems including: radiant floor, hot water baseboard and radiators. It also interfaces easily with forced air furnaces by utilizing an in-duct hot water coil.

GARN WHS wood heating unitEfficiency
GARN WHS equipment was independently tested for efficiency in 1986 (70% overall) and 2006 (75.4)% overall) based on the higher heating value of wood. This means less smoke, less wood burned, less wood handling and reduced emissions.

GARN WHS emissions are proven to be significantly lower than other outdoor wood heating equipment and 33% lower than the proposed 2008 EPA regulations.

Because of internal energy storage, GARN WHS further increases safety by not requiring an active fire overnight. With GARN® equipment, approximately 97% of the wood is converted to energy and 87% of that energy is stored for use.GARN equipment is certified safe by a leading independent USA and Canadian product testing laboratory.

GARN WHS equipment has a proven corrosion protection system that includes the water-side welding of all internal seams and the inclusion of a manway access.

You do not have to stand outdoors to load a GARN WHS unit because the unit is housed within a small shed. GARN equipment is even certified to be located within commercial buildings.

  Bradford White

TTW1 Gas Water Heater

Water heater Features
  • Power vented for positive exhaust--the TTW1 users a specially designed assembly that blows exhaust gasses directly out of the building, eliminating the need for conventional chimneys or expensive flue systems.
  • Intermittent pilot ignition system--pilot does not burn while the water heater is in the stand-by mode.
  • 2" PVC vent--the water heater can be vented with 2" PVC for lengths up to 20 feet with (3) 90º elbows.
  • 3" PVC vent--can be vented horizontally with 3" PVC for lengths up to 85 feet with (3) 90º elbows. Each 90 elbow is equivalent to 5 feet of vent pipe length.
  • Vertical venting through the roof--the water heater can be vented through the roof at a vertical height of 20 feet when using 2" PVC and 40 feet when using 3" PVC.
  • Vitraglas® lining--this exclusive glass formulation is applied under pressure to completely cover the tank interior for years of extra service. Protects against rust and corrosion. Will not crack or peel.
  • Protective magnesium rod--inhibits corrosion of tank interior for long trouble-free service.
  • Factory installed Hydrojet® Total Performance System--cold inlet sediment reducing device. Helps prevent sediment build up in tank. Increases first hour delivery of hot water while preventing temperature build up at top of tank.
  • Factory installed dielectric waterway fittings--all heaters equipped with special water heater nipples for longer life. No special dielectric fittings to buy.
  • Non-CFC foam insulation--covers the side and top of tank to save fuel by retarding loss of heat. Also increases jacket rigidity. R-value 8
  • Fully automatic controls--automatic temperature selection. Built-in energy cut-off switch prevents abnormally high water temperature for extra safety. Combination gas valve has built-in gas pressure regulation.
  • T&P relief valve opening--all sizes have special tapping on side of tank for ease of installing relief valves.
  • Flue baffle--designed to maximize the amount of heat absorbed in the lower portion of the tank. Reduces air movement in the water heater during standby periods to retard heat loss up the flue.
  • Five or ten year limited warranty on steel tank--heavy gauge steel automatically formed, rolled and welded to assure a continuous seam for glass lining. Each tank is triple tested to insure quality.
  • Two year limited warranty on parts.


Dahlquist Heating TV
Dahlquist Heating & Cooling, Inc
3399 Faust Lake Road
Rhinelander, WI 54501
Phone: 715-361-2798
Fax: 715-362-9791

Monday thru Friday
8AM till 4:30PM
Sat: by Appointment
NATE - North American Technician Excellence
24 Hour Emergency Service
24 Hour live representatives answer the phone.
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