Web Design in Fresno for Contractors Who Offer Furnaces for Sale

Updated November 2026 · Written and maintained by the Progression Agency strategy team

The San Joaquin Valley Air District, headquartered in Fresno, limits nitrogen oxides from home furnaces at the point of sale. Its Rule 4905 reaches anyone who supplies, sells, offers for sale, installs or solicits the installation of one in the Valley, and a furnace page, a quote form and a paid ad all offer or solicit. Web design in Fresno for heating and cooling contractors builds those pages from the rule’s own furnace categories, so each page offers the units the rule allows for that category. Progression’s team is in New York, builds Fresno sites remotely, and comes out for on-site sessions on request.

A clearance furnace with a propane-only carton

A heating contractor lists a clearance furnace at a price that fills the week’s quote requests. The carton in the warehouse carries a sentence the listing does not repeat.

Rule 4905 exempts a furnace that is to be installed with a propane conversion kit for propane firing only, and from August 1, 2018 the carton or furnace must display wording that says so. A homeowner on natural gas is not the buyer that unit was made for. A listing that invites that homeowner to order it is the contractor’s problem, not only the installer’s.

• Put the propane only wording on the page that lists the unit.
• Ask the fuel type before any price or checkout step.
• Do not run a banner ad for a unit the page cannot offer.
• Remove a listing the day the unit is no longer available.

Web design in Fresno for a rule that counts offers for sale

The San Joaquin Valley Air Pollution Control District, based at 1990 E. Gettysburg Avenue in Fresno, describes Rule 4905 as a point-of-sale rule that limits NOx emissions from natural gas-fired, fan-type central furnaces.

Section 2.0 of the rule applies to any person who supplies, sells, offers for sale, installs or solicits the installation of such a furnace for use within the San Joaquin Valley Air Basin, with a rated heat input under 175,000 Btu/hr, and to combination heating and cooling units with a rated cooling capacity under 65,000 Btu/hr.

Section 5.1 says no person shall do any of those things with a furnace unless it is certified under Section 6.1 and meets the limit in Table 1. A web page that lists a unit, a form that asks for an install and an ad that pitches one each sit in that list of verbs.

What did the 2015 amendment change?

It lowered the limit from 40 to 14 nanograms per joule, with a sell-through period and an emissions fee period. The District says manufacturers have met 14 ng/J for all unit types except those used in manufactured homes.

What happened on March 19, 2026?

The District adopted an extension of the emissions fee period for the manufactured home category, as its fact sheet describes.

Table 1 as the site’s furnace menu

Website design in Fresno for a contractor starts from Table 1 of the rule, because its furnace categories are the headings of the site. Each category gets a page that offers only what the rule allows for it, and a quote question that sorts the homeowner into it.

Condensing and non-condensing furnaces

These categories share the 14 ng/J limit. The pages differ in what they explain to the homeowner, not in what they promise.

• Show the model number and the limit the maker certified, from the maker’s documents.
• Never state a certification the manufacturer has not stated.
• Keep the quote form’s fuel question above every price.
• Name no brand or model on a stock photo.

Weatherized units installed outdoors

A weatherized unit is built for installation outside a building, with a protective jacket and integral venting, labeled for outdoor installation.

• List weatherized units only on a page for outdoor installs.
• Ask whether the furnace is going outside the building.
• Describe the label the unit carries in plain words.
• Keep these units off pages for indoor replacements.

Manufactured home units and the fee option to 2030

Manufactured home units were held to 40 ng/J from February 1, 2015 and to 14 ng/J from October 1, 2018, with a fee option for manufacturers described further down this page.

• Give manufactured home owners their own page.
• Ask first whether the home is a manufactured home.
• Explain any non-compliance label on a unit in plain words.
• State no date past those the District prints.

Propane-only furnaces and the words on the carton

The exempt category needs the carton wording, and the page that lists such a unit should carry the same sentence.

• Repeat the carton wording exactly where the unit is listed.
• Offer these units to propane homes only.
• Ask the fuel type before anything else.
• Link the District’s Rule 4905 page for the full text.

Build costs for a contractor’s furnace pages

A contractor site with a page per category, a quote form and ad landing pages sits in the ranges below. Pricing depends on scope and is set in the written proposal. Published prices are subject to change.

What Progression lists for a contractor build

These are the fixed-scope prices on our website design and development page, shown as starting prices.

For the wider picture of sites for heating and cooling companies, see HVAC website design and contractor website design.

Rating plate lines a listing can repeat

Section 6.1.2 requires the manufacturer to display the model number on the shipping container and the rating plate. Units made after the applicable Table 1 date also show the rated heat input or cooling capacity, the applicable NOx emission limit and the date of manufacture or a date code.

The plain advice: each listing shows the model number and the limit the manufacturer certified, taken from the manufacturer’s own documents. The site never states a certification the maker has not stated, and it never adds a limit of its own.

• Copy the model number exactly as the rating plate shows it.
• Show the limit in the same units the rule uses.
• Leave the field blank when the maker has not stated it.
• Update the listing when the maker updates its documents.

Five years of records behind each quote

Section 6.3 says any manufacturer, distributor or contractor who supplies, distributes, sells, offers for sale or installs a furnace in or into the Valley shall maintain such records as necessary to demonstrate compliance for at least five years, and make them available to the District on request.

A quote tool and an order system can keep that record without extra work. Each quote stores the model number offered, the model number installed and the date, so a request from the District is answered from the site’s own data.

What does a quote record hold?

The model number offered, the model number installed and the date. Those three fields answer most record requests.

• Save the model number with every quote, not only with every sale.
• Store the installed model number with the job date.
• Export the records to a file the office controls.
• Keep the export for at least five years.

Ads that solicit an install

Sections 2.0 and 5.1 use the phrase solicit the installation. Paid search, social posts and mailers that name a model fall inside it, so the copy has to match the units the business may install in the Valley.

The plain advice is to name a model only when it is a unit the business may install in the Valley, and to keep stock photos free of model numbers. An ad is shorter than a page, and its landing page carries the detail.

• Name a model in an ad only after checking it against the maker’s documents.
• Use stock photos without model numbers.
• Send the ad to the page for the right furnace category.
• Pause an ad when the unit leaves the price list.

Fresno website design for manufactured home owners

The District’s fact sheet says the emissions fee option for manufactured home units runs five more years, until September 30, 2030. Units sold under it must meet 40 ng/J and must be manufactured before that date.

Units manufactured before the deadline may be supplied, sold and installed until March 31, 2031. Under Section 6.4, units made after October 1, 2018 that use the fee option carry an APCO-approved label saying the unit does not comply with the Table 1 limits.

A page for manufactured home owners explains that label in plain words and books a visit. It makes no forecast past 2031.

• Explain the label in a sentence a homeowner can follow.
• Book the visit from the page, not from a chat.
• Ask the home type before the model.
• Leave out any date the District has not printed.

Rule questions go to the District

The page answers homeowner questions, not legal ones. Rule and certification questions go to the District’s Compliance Department at (559) 230-5950 and to its Rule 4905 page; anything else goes to counsel.

Who answers a certification question?

The District and the furnace manufacturer. A contractor’s site repeats what the maker states and does not certify anything itself.

• Link the Rule 4905 page by name on the furnace pages.
• Keep the phone number out of ad copy.
• Send certification questions to the manufacturer and the District.
• Leave legal advice to counsel.

What the quote form asks first

The quote form sorts a homeowner into a category before any price appears, and it records the answers. Two questions do most of the work: Is the home a manufactured home? Is the home on natural gas or propane?

Why ask the fuel first?

Because the propane exemption covers units installed for propane firing only. A homeowner on natural gas should not be shown them.

What about a replacement that is outdoors?

That is the weatherized question: will the furnace sit outside the building? The answer sends the visitor to the right page.

• Ask the home type first.
• Ask the fuel type second.
• Ask where the furnace will be installed third.
• Show prices only after all three.

The furnace page checklist

Seven items settle most of the work before a furnace page goes live. The card lists them. For a contractor’s full site, see our HVAC website design page.

For the state’s broader rules on website notices, see our web design in California page.

Frequently asked questions