HVAC Sizing Calculation in Maryland for $100.
HVAC sizing for homes in Maryland done properly: Manual J loads plus Manual S equipment selection instead of a rule of thumb. J, S and D together for $100.
- J + S + D for $100
- Permit-ready PDF
- 2–3 business days
- No subscription

Free quote confirmation, no account needed. You pay per house, no subscription.
Maryland spans 2 climate zones.
Design conditions change across the state, so the same house plan can need different equipment in different cities. Places by IECC climate zone (county assignment):
- Zone 4A · 521 places
- Zone 5A · 15 places
J, S & D for $100 in Maryland. All three.
One price for every builder and every contractor, from the first house. No subscription, no software license, no minimum order.
Manual J + S + D
All three reports for one house, matched to each other, in one PDF package.
Order for $100Manual J
Room-by-room heating and cooling loads (sensible and latent) to ACCA Manual J 8th Edition.
Manual S
Checks the furnace, heat pump or AC you plan against the Manual J loads and manufacturer data.
Manual D
Duct sizing per room: airflow (CFM), supply and return sizes, friction rate and static pressure.
$100 per dwelling unit for all three reports, also if you need only one of them. Confirmed before we start. Unusual projects (very large custom homes, more than two systems) are quoted first.
A report your plan reviewer recognizes.
Every report is built from your actual plans and the design conditions for Maryland, and delivered as one PDF you can upload with the permit application.
Example screen with sample numbers (heating / cooling Btu/h per room). Your report uses your plans.
HVAC Sizing Calculation in the biggest cities of Maryland.
Every place in Maryland.
- Aberdeen
- Aberdeen Proving Ground
- Abingdon
- Accident
- Accokeek
- Adamstown
- Adelphi
- Algonquin
- Allen
- Andrews AFB
- Annapolis
- Annapolis Neck
- Antietam
- Aquasco
- Arbutus
- Arden on the Severn
- Arnold
- Ashton-Sandy Spring
- Aspen Hill
- Baden
- Bagtown
- Bakersville
- Ballenger Creek
- Baltimore
- Baltimore Highlands
- Barclay
- Barnesville
- Barrelville
- Barton
- Bartonsville
- Beaver Creek
- Bel Air (CDP)
- Bel Air (town)
- Bel Air North
- Bel Air South
- Beltsville
- Benedict
- Bensville
- Berlin
- Berwyn Heights
- Bethesda
- Betterton
- Bier
- Big Pool
- Big Spring
- Bishopville
- Bivalve
- Bladensburg
- Bloomington
- Boonsboro
- Bowie
- Bowleys Quarters
- Bowling Green
- Bowmans Addition
- Braddock Heights
- Brandywine
- Breathedsville
- Brentwood
- Brock Hall
- Brookeville
- Brooklyn Park
- Brookmont
- Brookview
- Broomes Island
- Brown Station
- Brownsville
- Brunswick
- Bryans Road
- Bryantown
- Buckeystown
- Burkittsville
- Burnt Mills
- Burtonsville
- Butlertown
- Cabin John
- California
- Callaway
- Calvert Beach
- Calverton
- Cambridge
- Camp Springs
- Cape St. Claire
- Capitol Heights
- Carlos
- Carney
- Catonsville
- Cavetown
- Cearfoss
- Cecilton
- Cedar Heights
- Cedarville
- Centreville
- Chance
- Charlestown
- Charlotte Hall
- Charlton
- Chesapeake
- Chesapeake Beach
- Chesapeake Landing
- Chesapeake Ranch Estates
- Chester
- Chestertown
- Cheverly
- Chevy Chase (CDP)
- Chevy Chase (Montgomery County)
- Chevy Chase (Montgomery County)
- Chevy Chase Section Five
- Chevy Chase Section Three
- Chevy Chase View
- Chewsville
- Chillum
- Choptank
- Church Creek
- Church Hill
- Clarksburg
- Clarysville
- Clear Spring
- Clinton
- Cloverly
- Cobb Island
- Cockeysville
- Colesville
- College Park
- Colmar Manor
- Columbia
- Coral Hills
- Cordova
- Corriganville
- Cottage
- Crellin
- Cresaptown
- Crisfield
- Crofton
- Croom
- Crownsville
- Crumpton
- Cumberland
- Damascus
- Dames Quarter
- Danville
- Dargan
- Darlington
- Darnestown
- Dawson
- Deal Island
- Deale
- Deer Park
- Delmar
- Denton
- Derwood
- Detmold
- District Heights
- Downsville
- Drum Point
- Dundalk
- Dunkirk
- Eagle Harbor
- Eakles Mill
- East New Market
- East Riverdale
- Easton
- Eckhart Mines
- Eden
- Edesville
- Edgemere
- Edgemont
- Edgewater
- Edgewood
- Edmonston
- Eldersburg
- Eldorado
- Elkridge
- Elkton
- Ellerslie
- Ellicott
- Elliott
- Emmitsburg
- Ernstville
- Essex
- Fairland
- Fairlee
- Fairmount
- Fairmount Heights
- Fairplay
- Fairview
- Fairwood
- Fallston
- Federalsburg
- Ferndale
- Finzel
- Fishing Creek
- Flintstone
- Flower Hill
- Forest Glen
- Forest Heights
- Forestville
- Fort Meade
- Fort Ritchie
- Fort Washington
- Fountainhead-Orchard Hills
- Four Corners
- Franklin
- Frederick
- Frenchtown-Rumbly
- Friendly
- Friendship
- Friendship Heights
- Friendsville
- Frostburg
- Fruitland
- Fulton
- Funkstown
- Gaithersburg
- Galena
- Galestown
- Galesville
- Gambrills
- Gapland
- Garrett Park
- Garretts Mill
- Garrison
- Georgetown
- Germantown
- Gilmore
- Girdletree
- Glassmanor
- Glen Burnie
- Glen Echo
- Glenarden
- Glenmont
- Glenn Dale
- Golden Beach
- Goldsboro
- Gorman
- Graceham
- Grahamtown
- Grantsville
- Grasonville
- Green Valley
- Greenbelt
- Greensboro
- Greensburg
- Hagerstown
- Halfway
- Hampstead
- Hampton
- Hancock
- Havre de Grace
- Hebron
- Henderson
- Herald Harbor
- Highfield-Cascade
- Highland
- Highland Beach
- Hillandale
- Hillcrest Heights
- Hillsboro
- Honeygo
- Hughesville
- Huntingtown
- Hurlock
- Hutton
- Hyattsville
- Ilchester
- Indian Head
- Indian Springs
- Jarrettsville
- Jefferson
- Jennings
- Jessup
- Jesterville
- Joppatowne
- Jugtown
- Keedysville
- Kemp Mill
- Kemps Mill
- Kennedyville
- Kensington
- Kent Narrows
- Kettering
- Kingstown
- Kingsville
- Kitzmiller
- Klondike
- Konterra
- La Plata
- La Vale
- Lake Arbor
- Lake Shore
- Landover
- Landover Hills
- Langley Park
- Lanham
- Lansdowne
- Largo
- Laurel
- Layhill
- Laytonsville
- Leisure World
- Leitersburg
For builders and HVAC contractors in Maryland.
We work as your back office for load calculations: you build and install, we deliver the numbers and the paperwork.

Home builders & developers
- Manual J, S and D with every permit set
- Same $100 price for one house or a whole subdivision
- Repeat plans: we keep your models on file
- One contact for all your projects

HVAC contractors
- Size equipment right and win the bid on facts
- Load calc for replacement permits and rebates
- Manual D before the duct crew starts
- No software license, pay only when you have a job
HVAC Sizing Calculation in Maryland, answered.
Can I size HVAC with an online calculator?
Online calculators give a rough range from floor area and climate. They are fine for a first guess, but a permit usually needs a Manual J based on the actual plans, and the equipment choice needs Manual S.
How much does a Manual J cost?
$100 per house for Manual J, Manual S and Manual D together. No subscription and no minimum order.
How fast do I get the report?
Usually 2–3 business days after we receive complete plans and specs.
Will the building department accept it?
Reports follow ACCA Manual J 8th Edition, Manual S and Manual D and use the plans you send. Acceptance is up to your building department; if plan review asks for corrections to our report, we revise it at no charge.
Do you work with builders and contractors on many houses?
Yes. Builders and HVAC contractors are our main customers. The price stays $100 per house for J, S and D, and repeat plans are kept on file.
What do I need to send?
Floor plans, elevations or orientation, the window and door schedule, insulation levels, duct location and the equipment you plan to install.

Your next permit, sized right.
Manual J, S and D together for $100 in Maryland. Send the plans today.
Order now