18S model
is 18" long, 7" wide.
Ideal for a water tank size of up to 30 gallons.
24S model
is 24" long, 7" wide.
Ideal for a water tank between 30 gallons and 60 gallons.
16T model
is 16" long, 10" wide.
Ideal for a water tank size between 60 gallons and 100 gallons.
18TL model
is 18" long, 10" wide.
Ideal for a tank size between 80 gallons and 120 gallons. When a "straight" coil won't fit, this coil with its "L-shaped" nipples usually will.
21T model
is 21" long, 10" wide.
Ideal for a water tank size between 80 gallons and 120 gallons.
23T model
is 14" long, 16" wide.
Ideal for hydronic use (baseboard heat), when 2 or 3 units are installed in a hotter-burning stove (such as a coal stove).
31T model
is 21" long, 17" wide.
The new Hilkoil Baseboard Hot Water Heater, is a
high-volume model for providing ample baseboard heat. Ideal for hydronic use.
| model | WATER LOOP kit | HILKOIL kit | COMPLETE HILKOIL |
| S=Steel T=Twin Coil Steel L=Angle |
a Stainless Steel Hot Water Loop, mounting hardware, gaskets, Instructions, and Warranty. | everything in the WATER LOOP kit, plus a temperature/pressure Relief Valve | everything in the HILKOIL kit, plus a Holesaw |
| 18S | $ 168 |
$ 183 |
$ 198 |
| 24S | $ 178 |
$ 193 |
$ 208 |
| 16T | $ 198 |
$ 213 |
$ 228 |
| 18TL | $ 228 |
$ 243 |
$ 258 |
| 21T | $ 215 |
$ 230 |
$ 245 |
| 23T | $ 235 |
$ 250 |
$ 265 |
| 31T | $ 265 |
$ 280 |
$ 295 |