How Haverlane Sources and Checks Pages
Plumbing in a manufactured home is built to a federal standard, so most questions on this site have a documented answer sitting somewhere instead of an opinion. Below is where those answers come from, who reads them before publication, and what happens the day one turns out to be wrong.
Start with the money, since it colors the rest
Haverlane is a publication. Nobody here pulls a skirting panel, crimps a PEX ring, or sets a water heater in a utility closet. Dial (800) 555-0176 and you reach a licensed plumbing partner who treats manufactured housing as ordinary work.
If that call turns into a booked job, the partner can send Haverlane a referral fee. The partner pays it out of their end. Your quote is the number you would have been given had you found that plumber through a neighbor, and the fee is not tacked onto it.
What the fee has never purchased is a sentence. Partners read the pages when you do, pick none of the topics, and have no route to argue a verdict off a page. When the truthful answer is that the heat tape is fine and the panel should be left shut, the page says that and the phone stays quiet. Who pays whom, and how much of it Haverlane sees, is itemized under how we make money. The people who run the site introduce themselves on the about page.
The federal code outranks everyone
A manufactured home is not plumbed to whatever the subdivision down the road follows. Two federal rules carry the weight here. Title 24 CFR Part 3280, the HUD Manufactured Home Construction and Safety Standards, governs how the home left the plant: water supply piping, drainage, fuel gas lines, and which appliances may be installed inside one. Title 24 CFR Part 3285, the Model Manufactured Home Installation Standards, picks up at the site and covers support, anchoring, crossover connections, and how utilities are joined once the home is set.
When those two documents settle a question, the question is settled. We read the rule text on eCFR or on hud.gov and cite the part, rather than repeating a retailer's paraphrase of it.
Everything below the code, in order
| Rank | What gets read | What it is allowed to settle |
|---|---|---|
| 1 | HUD standards on eCFR: 24 CFR 3280 and 3285 | Whether a part, a fitting, or an installation method is permitted at all |
| 2 | Federal housing data from the Census Bureau and HUD, including the Manufactured Housing Survey and the American Housing Survey | How common a situation is: age of the housing stock, heating fuel, whether the lot is rented |
| 3 | Energy Information Administration price series | The cost of electricity and propane behind any running-cost math |
| 4 | Manufacturer literature: installation manuals, spec sheets, and listing labels pulled from the maker's own site | Model-specific answers, such as whether a heater is listed for manufactured housing, clearances, and approved vent kits |
| 5 | National price aggregators such as Angi and HomeGuide | Cost bands and nothing else, credited by name, with the year the pricing describes |
Below that fifth row sit forum threads, dealer sales pages, and other people's articles. They are useful for spotting a question worth answering. They never become the source of a claim.
No figure travels without its parent
Every number on this site names the body that published it inside the same sentence: HUD requires, the Census Bureau counted, EIA reported, Angi's 2026 range. That habit costs a few words per page and hands you the ability to check us in about a minute, which is a trade we will make every time.
Prices run as ranges with a year attached, never as one tidy average, because swapping a heater through a narrow closet door in an older single-wide is not the same job as swapping one where the wall panel comes off. Nothing here hides behind unnamed experts or a vague study. Where the sourcing runs dry, the page says the figure is not well documented, or the sentence comes out. A confident invented number does more damage than an admitted gap.
Where our writing stops: gas and 240 volts
Any procedure that touches fuel or current opens with the shutoff step: valve closed, breaker off, appliance cool, and a check that the line is actually dead. No page will describe defeating a relief valve, a thermal cutoff, a vent, or a bond as an option a homeowner might weigh. Nothing published here is professional plumbing, electrical, insurance, or legal advice, and no article can inspect the home you are standing in.
Software drafts, a person clears it
Drafting on this site is AI-assisted, and stating that plainly beats letting a reader discover it. A model produces the first version. An editor then reads it against this policy, walks each figure back to the organization that published it, deletes what cannot be traced, and rewrites any passage that sounds more certain than the evidence underneath it.
Nobody fictional signs the work. There is no invented master plumber with a portrait, no license we do not hold, no count of years in the trade. The Haverlane Editorial Team byline is simply an accurate label for who assembled the page, and this policy does the job a credential would.
The photographs are generated
Images on this site are generated rather than shot on a job site. Each file carries IPTC metadata identifying it as machine created, so any tool that inspects the file learns that before you do. Alt text describes what the frame honestly contains: a crossover line under a belly wrap, a heat tape run up a riser, a thermostat plate off an electric heater.
None of it is captioned as our work, as a partner's finished job, or as a real customer's home, because that claim would be false. Where a drawing teaches better than a photograph could, such as a supply and drain layout, we draw the diagram instead.
Things you will not find here
- Reviews, ratings, or testimonials of any kind, ours or anyone else's.
- A claim that Haverlane holds a plumbing license or an installer certification. It holds neither. Reading a code book requires no card.
- One article rebuilt forty times with a different town name dropped into it.
- Advertising written to look like editorial.
- A recommendation to skip a permit or an inspection because the home sits in a park.
Tell us the page is wrong
Correction mail gets opened before anything else. A report we can act on has three parts: which URL, which sentence, and what belongs there instead, or the document that proves us wrong.
Mail it to hello@haverlane.com, the only route in for a correction, since this site runs no form to fill in; the contact page spells out what a usable report carries. Confirmed errors get repaired in the text itself rather than confessed in a footnote at the bottom, and a repair that changes the meaning moves the updated date.
What the two dates mean
A publish date records the day the page went live for the first time. An updated date shows up only after something real moved: a code citation re-checked against current rule text, a price band rebuilt for a new year, an error corrected, or a section rewritten because field practice changed. Nudging a date forward to look recent is a trick aimed at crawlers, and it is not one we play. A page nobody has needed to touch keeps the dates it already carried.