Image credits
The diagrams on Heater Handbook are original drawings. They are not photographs of staff, and they are not installation plans.
The pictures on Heater Handbook are line drawings made for these pages. They are not stock photographs, not portraits, and not pictures of a crew. There is no staff photo because this site does not invent people. The mark in the header is a handbook cover and a tank, drawn as SVG. The favicon is the same mark, smaller.
What each diagram is for
The storage-tank cutaway shows the path a gallon takes: cold water down the dip tube, hot water off the top, a flue up the middle on a gas heater, an anode in the water, a relief valve with a discharge pipe, a heat source at the bottom, and a drain. It sits on how a storage tank works. It is not to scale. Electric tanks do not have that center flue. The drawing is the gas-tank layout, which is the one people misread most often.
The anode drawing is two rods under hex heads. One is thick. One is a core. It sits on anode rods. It does not show the socket size for your model, and it does not show how hard to pull. If the hex will not move, the article tells you to stop.
The relief-valve drawing shows a pipe that runs downhill and ends where you can see it, with no second valve and no cap. It sits on why the relief valve drips. A real pipe also has to meet the adopted code: size, air gap, material, and the exact termination height. The drawing is the idea of those rules. It is not the permit sketch. Permits, pans, and straps has the longer list.
The tankless drawing is a flow sensor, then a heat exchanger, then a hot outlet. It sits on how a tankless heater works. It does not show gas piping, vent length, or a condensate neutralizer. Those differ by model. The caption states the two limits that matter: minimum flow to fire, and maximum flow at your temperature rise.
What the drawings leave out
They leave out wiring, gas-valve adjustments, and any sequence that would look like permission to open a fuel line or a live panel. They leave out brand shapes. A real jacket will not match the rectangle. They leave out people, hands, and “before and after” scenes. If a diagram and a manufacturer’s manual disagree, the manual wins. If a diagram and the inspector disagree, the inspector wins.
The files are SVG, which is text, small, and sharp on a phone. Article diagrams use lazy loading so they do not compete with the first paragraph. The header mark is inline and tiny. There is no photo library and no third-party image license to track, because no third-party image is used. If that changes, this page will name the photographer, the source, and the license before the picture goes up.
Nothing on the site is a photo of a technician, a customer, or a “team.” If you see a face, it does not belong to this project. The words are credited to the Heater Handbook editorial team, which is a desk, not a roster of named plumbers. That choice is explained on the about page.
The editorial policy is how the words are sourced. This page is only the pictures. Questions: contact@heaterhandbook.com.