Coop Heater and Heated Waterer Brands: Who Makes What
A small group of established brands sells coop heaters and heated poultry waterers in the US, next to a changing set of marketplace labels. They differ less in the products than in what they publish. Farm Innovators, Premier 1, K&H, Miller Manufacturing (API), Cozy Products and Sweeter Heater put data on their own websites. For the Harris Farms heated poultry drinker base we found no product page of the brand owner, so its data comes from the Amazon listing.
Disclosure: This page contains paid links to Amazon, marked with * or “paid link”. If you buy through them, we earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. This site is financed by these commissions; products are selected by the criteria on our methodology page. How we evaluate · Learn more
The short version
Farm Innovators, Premier 1 Supplies, K&H Pet Products and Miller Manufacturing (API) make heated poultry waterers with published data; Cozy Products and Sweeter Heater make radiant coop heaters. K&H states a MET listing and API a cULus listing for their waterers. The Harris Farms heated drinker base is sold with 125 watts for metal and plastic drinkers according to its Amazon listing; we found no manufacturer page that confirms it.
No independent laboratory test of any coop heater or heated poultry waterer was found. What separates one product from the next is therefore what its maker puts in writing: wattage, a rated low temperature, a listing mark, an instruction sheet. A brand with its own website and manuals can be checked. A marketplace label that changes from season to season cannot.
That is the line this overview draws. How the data is weighed is explained under how we evaluate.
Marked “according to the seller” wherever they appear
Four of these brands have pages of their own. The rest of this page covers the three that do not: Harris Farms, K&H and API.
Harris Farms: heated poultry drinker base
Harris Farms is a poultry-supply brand. Its products appear on the website of Manna Pro, where the poultry section lists Harris Farms drinkers and drinker bases. On the collection page we read on October 11, 2026, we found Harris Farms screw-on drinker bases that are not described as heated, and no page for the heated base. (The address we opened is the one a web search returns for the heated base.)
So the data for the heated base comes from the Amazon listing alone:
125 watts, thermostatically controlled
described as safe to use with metal and plastic drinkers or metal founts
prevents freezing in temperatures as low as 10 °F
for indoor or outdoor use in a dry covered area
All four points are according to the seller. The second one is the interesting one, because it is where heated bases differ most: the Farm Innovators HP-125, with the same wattage, is designed for double-wall metal founts according to its manufacturer. A plastic claim that rests on a listing is weaker than one in a manufacturer's document.
Alternative, seller dataAd
Harris Farms
Harris Farms heated base
A heated drinker base from a second established poultry brand.
Seller data only: We only have the Amazon listing for this product. We list it as an option, not as a recommendation.
Why here: An established brand name, but no manufacturer page we could read. Treat wattage, the 10 °F figure and the plastic claim as the seller's statements and check the instructions in the box.
Best for: Owners of a Harris Farms or similar metal drinker who want a base from the same brand.
What speaks for it
Established poultry-supply brand
Low price class
What to know first
No product page for it was found on the brand owner's website in October 2026
Permitted fount materials and wattage are not confirmed – check the instructions before use
The bases with manufacturer documentation, one for metal founts and one for plastic or metal drinkers, are compared under heated bases for chicken waterers.
K&H Pet Products: heated waterer, pad and perch
K&H is a pet-products manufacturer whose poultry line is small and well documented. Its distinguishing feature is the MET listing it states for each heated product.
Thermo-Poultry Waterer. The K&H heated poultry waterer*(paid link) holds 2.5 gallons and draws 60 watts. According to the manufacturer the heated version is MET listed, the tank design keeps chickens from roosting on top, a filter tray lifts out for cleaning, and both versions carry a two-year manufacturer's warranty. Two things to know: the same waterer is sold unheated, so check that the listing says heated, and the product page names no lowest rated temperature. The page also notes that the unit has no on/off switch and is on whenever it is plugged in.
Thermo-Peep heated pad. A 25-watt, 9 by 12 inch pad with a thermostatic control that is MET certified according to the manufacturer. It is our pick for contact heat and is described under heated pads for chickens.
Thermo-Chicken Perch. K&H lists a heated perch in two sizes, 26 inches with 40 watts and 36 inches with 55 watts, with dual internal thermostats, a MET listing and a one-year limited warranty. The page states no surface temperature. On October 11, 2026, both sizes were shown as sold out in the manufacturer's shop. We do not link the perch, and the extension services read for this site recommend a flat wooden roost for the feet.
API: the Miller Manufacturing waterer
API is one of the brands of Miller Manufacturing Company, which describes itself as serving farmers since 1941 and lists Little Giant among its other brands. The API 3-gallon heated poultry waterer*(paid link), item HPW33, is the brand's entry here.
100 W
Power, 120 V (manufacturer)
3 gal
Capacity (manufacturer)
−5 °F
Keeps water ice-free down to (manufacturer)
cULus
Listing mark (manufacturer)
It is thermostatically controlled and has a one-year warranty, according to the manufacturer. In our comparison it is the alternative for keepers who want a 3-gallon fount with a named listing mark.
How the three compare with our pick
This selection covers only products sold on Amazon. It is not a market overview. Products are compared by manufacturer and listing data, not by hands-on testing. How we evaluate
Comparison: Farm Innovators HPF-100, 3 gal, K&H Thermo-Poultry Waterer, 2.5 gal, API heated waterer, 3 gal
The Farm Innovators HPF-100 stays our pick for a complete heated waterer because both a product page and an instruction sheet exist for it. The K&H and API units are the alternatives with a listing mark stated by the manufacturer. All complete units, including the Premier 1 waterer for deeper cold, are set side by side under best heated chicken waterers.
What a brand name does not tell you
A listing mark is the maker's statement. We report MET, cULus, ETL and UL as “according to the manufacturer” or “according to the seller” and did not look them up in the certifiers' directories. Check the mark on the device.
A known brand can still lack a document. The Harris Farms base shows it.
A rating is not a test. Low-temperature figures are the manufacturers' own.
Every one of these devices needs the same outlet. The NFPA tip sheet for backyard coops asks for a properly grounded cord and plug on electrically heated poultry waterers and says not to use extension cords in the coop. More under power for the coop.
The device types behind the brand names are explained on the heated chicken waterer overview.
Questions keepers ask
Can the Harris Farms heated poultry drinker base be used with plastic drinkers?
According to the seller's Amazon listing, yes: it describes the base as safe to use with metal and plastic drinkers, with 125 watts, a thermostat and protection down to 10 °F. We found no product page for the base on the brand owner's website in October 2026, so none of this is confirmed by a manufacturer document we could read. Read the instructions in the box before you put a plastic drinker on it.
Is the K&H heated poultry waterer safety listed?
The manufacturer says so. K&H Pet Products states on its product page that the heated version of its 2.5-gallon poultry waterer is MET listed, meaning it has been certified by MET Labs to adhere to electrical safety standards. It draws 60 watts and comes with a two-year manufacturer's warranty. The page names no lowest rated temperature.
What is the K&H Thermo-Chicken Perch?
A heated perch in two sizes: 26 inches with 40 watts and 36 inches with 55 watts, according to K&H Pet Products. The manufacturer describes dual internal thermostats, a MET listing, a 5.5-foot cord and a one-year limited warranty. Its page states no surface temperature. When we checked on October 11, 2026, both sizes were shown as sold out in the manufacturer's shop, and the perch is not among the products this site links.
Who makes API heated poultry waterers?
Miller Manufacturing Company. Its website lists API next to brands such as Little Giant and says the company has been serving farmers since 1941. The API 3-gallon heated poultry waterer, item HPW33, has 100 watts, is thermostatically controlled, cULus Listed and keeps water ice-free down to −5 °F, with a one-year warranty, all according to the manufacturer.
Coop heat, winter water and the sources behind both
We are the editorial team at chickencoopheater.com. We read what university extension services, the NFPA and manufacturers publish about heating a coop and keeping water liquid, and turn it into plain-English buying advice with the sources on every page.