Home About Us Shipping Returns View All listings Store Categories Outdoor Furnace Brands · Acme Furnace · American Royal · Aquatherm · Aspen · Brute Force · Clear Flame · Conestoga Champion · Coyote · Cozeburn · Crown Royal · Earth · Econoburn · Elite-Indoor · Empyre · Freedom · Free Heat Machine · Garn · Global Hydronics · Greenwood · Hardy · Harmon · Hawken Energy · Heatmor · HeatMaster · Heat Source 1 · Johnson · Legend · Mahoning · Natures Comfort · Northland · Ozark · Pacific Western · Polar · Portage Main · Ridge Wood · Royall · Shaver · Soquoyah · Taylor · Wood Doctor · WoodMaster · Thermo Control · Hicks · Various Wood Furnace Brands Central Boiler Parts · Central Boiler Water-To-Air · Central Boiler Water-To-Water · Central Boiler Convection Heat · Central Boiler Thermopex Pipe · Central Boiler Circulators · Central Boiler Manifolds · Central Boiler Fittings Pex · Central Boiler Fittings NPT · Central Boiler Fittings Copper · Central Boiler Zone/Mix Valves · Central Boiler Thermo Valves · Central Boiler Accessories · Central Boiler Water Treatment · Central Boiler Electrical · Central Boiler Controllers · Central Boiler Door Related · Central Boiler Gas Related · Central Boiler Chimneys · Central Boiler Orig. Equipment · Central Thermostats /Aquastats · Central Boiler Maxim Parts Copper Hydronic Manifolds · Manifolds Uponor ProPex · Manifolds Pex Crimp · Manifolds Compression Std. Pex · Manifolds Compress Pex-Al-Pex · Manifolds Accessories Underground Pipe Pumps, Supplies, Accessories · Pumps · Pump Accessories Door Kits / Gasket Materials · Pre-Cut Gasket Lengths · Pellet Stove Gasket Kits · Gasket Adhesives · Full Roll / Box, Bulk Gaskets Hanging Hydronic Heaters Pipe Fittings · Fittings Pex · Fittings Pex-Al-Pex Comp. · Fittings Copper Other See all items in the store Product Description This water test kit will work with and without propylene glycol antifreeze present in the furnace water sample. Complete kits include pH test strips. It's a good idea to check your water at least 3 times a year. This kit replaces water test kits, p/n 405 597-SP, as of 7/23/2019. The water in your outdoor wood furnace/boiler is the lifeblood of the system. If left unchecked, untreated water can clog expensive heat exchangers and corrode the boiler from the inside out. ABOUT US Authorized supplier of Central Boiler Parts and all other Outdoor Wood Furnace supplies. Your One Stop Shop for Outdoor Furnace Installation Parts Info: We specialize in supplying our customers with quality parts for a complete installation! We have anything you will need including: Insulated Pex Piping, Plate Heat Exchangers, Hot Water Forced Air Coils, Pool Heat Exchangers, Hot Water Unit Heaters, Pex Tubing, Circulator Pumps, Aquastats, Valves, Fittings, etc. Also stock complete line of Door Gasket Material for all Pellet Stoves, Wood and Gas burners, Don't see it listed Ask. SHIPPING Fast Next Day Shipping. Since many orders are 3rd party shipment, tracking may be delayed or unavailable. We will update you if any information is received. RETURNS Returns not accepted, unless DOA right out of box. Manufacturer's Warranties apply. Questions Questions, reach out to us via the message service.