Best of

Best tankless
Best gas models
Best electric models
Best condensing models

Type review

Gas vs. electric vs. oil comparison
Drain water heat-recovery device
Condensing water heaters
POU water heaters
Portable type
Water heating infographic
Vitodens 100
Vitodens 200
Vitodens 222
Viessmann boilers
Kenmore heat pumps
Water boilers and warmers buying guide
Atwood marine

Tankless water heaters

Is it time to buy a tankless
Tankless electric
Propane models
Tankless problems
Why buying a tankless with a recirculation pump makes sense
Does my tankless water heater need a filter
Tankless maintenance
Installing a tankless water heater
Plumbing tankless
Tankless venting
Flushing tankless
Tankless vs. tank-type water heaters
Tankless gas-type
Tankless comparison
Prepare a tankless water heater for winter
Tankless parts

Tank-type water heaters

Maintenance tips
How to hook up a water tank heater
Sizing a water heater
Adjusting temperature
Can a water heater explode
Open or closed water heater system
Replacing a water heater
How to remove an old water heater
How to save money on water heating
How to buy an insulation blanket
Water heater safety tips
How to install a mixing valve
How to flush a water heater
Draining tips
How to replace a drain valve
How to install an expansion tank
How to replace a TPR valve

Gas water heaters

Gas vs. electric water heaters
Installation instructions
Troubleshooting tips
Installation checklist for gas tank-type water heaters
Installing a gas water heater in the attic
Natural gas water heaters
How to light a pilot light
Venting options
Gas burner cleaning and testing

Electric water heaters

How to replace electric heating elements
Installation tips
Troubleshooting guide
Hybrids vs. electric water heaters
Westinghouse electric
3 ways to minimize damages caused by your electric water heater
How to replace a thermostat
Stiebel DHC-E
Stiebel DHC
Stiebel Eltron Tempra

Solar water heaters

How to build a solar water heater
Solar panels
Thermosyphon water heaters
Evacuated collectors
DIY solar collectors
Solar water heaters problems and troubleshooting
Batch water heaters

RV water heaters

Atwood review
Suburban review

Heat pumps

Installing a heat pump
Troubleshooting heat pumps
GE GeoSpring

Pool heaters

Gas pool heaters - buying guide
Electric pool heaters review
Solar swimming pool heaters
Benefits of pool heat pumps
Hayward review
AquaCal review
Raypak review
Jandy review
Pentair review
Spa heaters


Rinnai RUR98
Rinnai RUC98
Rinnai RL94
Rinnai RL75
Rinnai V65
Rinnai gas boilers
Rinnai error codes 11
Troubleshooting Rinnai
How to use Rinnai


Takagi T-H3
Takagi T-K4
Takagi T-H2
Takagi T-D2
Takagi T-KJr2


Bosch C 1210 ES
Bosch C 1050 ES
Bosch C 950 ES
Bosch 940 ES
Bosch Therm 520
Bosch Tronic
Bosch tankless error codes


Noritz NRCP
Noritz NRC
Noritz NR
Noritz CB
Noritz NRC111
Noritz NRC98
Noritz NRC663 (EZTR40)
Noritz NR71
Noritz NR66
Noritz NR50
Noritz error codes


Paloma PH2-25
Paloma PH2-28
Paloma condensing


Navien NHB
Navien NCB
Navien NPE


American electric
American gas
American tankless
American 40-gal gas
American 50-gal gas
American heat pumps
Top 5 models
Tankless  troubleshooting

AO Smith

AO Smith gas
AO Smith electric
AO Smith tankless
AO Smith heat pump - Voltex
AO Smith direct vent
AO Smith condensing
AO Smith tank-type condensing - Vertex
AO smith condensing error codes

Bradford White

Bradford White gas
Bradford White electric
Bradford White tankless
Bradford White 30-gal gas
Bradford White 40-gal gas
Bradford White direct vent
Bradford White power vent


Giant gas
Giant electric
Giant tankless


HTP boilers
HTP hybrid

John Wood

John Wood gas
John Wood tankless


Reliance tankless
Reliance heat pumps


Rheem electric
Rheem gas
Rheem heat pumps
Rheem gas tankless
Rheem electric tankless
Rheem power vent
Rheem direct vent
Rheem high efficiency


Richmond tankless
Richmond gas


Ruud tankless
Ruud gas


State tankless
State gas
State electric
State Select
State condensing
State heat pumps
How does the State tankless work


Whirlpool gas
Whirlpool electric

How to

How to replace the Hydro Generator on Bosch water heaters from 520 series
How to replace temperature sensors
How to replace a gas control valve
How to fix a noisy burner
How to remove and install heat exchangers on Bosch C1210 model
How to troubleshoot Bosch tankless by using the error codes
How to replace a water valve on C1050ES
How to fix a thermocouple
How to check is my gas-powered Kenmore water heater working properly
How can I convert a heating element on Kemore Power Miser 12 50-gal to use different wattage than factory installed
How to remove the hot surface igniter for cleaning and replacement
How to install a Rheem heat pump
Fixing hot water bad taste
Why and how to reset an ECO
How to fix AO Smith when the pilot light goes out
How to install a powered anode rod on GAHH 40 from AO Smith
How to test an air pressure switch
How to fix an error code 6 on AO Smith GPDH 50
How to clean a flame arrestor
Troubleshooting the power vent water heater where the blower runs continuously
How to operate the gas valve and thermostat on gas tank-type models
How to install heat traps
Troubleshooting the error code 111 - No hot water
How to fix heating elements and no hot water problem due to dry firing, bad wiring, and sediment build-up
How to replace an anode rod
How to replace a dip tube
How to replace a gas valve on the tank-type WH
How to replace a TPR valve
How to replace heating elements
Fixing the creaking noise
How to deal with condensation in venting
How to select water softeners for water heating
How to reduce water heating costs
How to chlorinate a water heater
Open or closed water heater system
Installing a draft hood
Backdrafting - the cause and solution
Tips on installing a heat pump
How to fix the "not enough hot water" problem
Using recirculation to fix the slow hot water delivery
How to select a water heater expert
How to become a water heater expert in the US
How to become a water heater expert in Canada
How to deal with water heater corrosion, rust and brown water
How to solve no hot water problem
How to prevent and fix flooding water heaters
Ignition failure on tankless water heaters and what to do
How to replace ignition electrodes on Bosch tankless


How to repair a water heater leak
Fixing the sediment buildup problem
Milky hot water
Discolored (rusty) hot water
Troubleshooting rotten egg odor
Water heater noise fix
Water hammer
Overheating issues
Low water pressure
Burner flame problems and solution
Pilot light problems
Temperature sensor trips
Dealing with the condensation


PEX pipes
Plumbing crossover
Plumbing is leaking and what to do

Hydronic heating

Hydronic floor heating
Electric floor heating


Drinking hot water
How to fix hot water bad taste

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