https://estimatekit.com/assets/CommonLoadCalculationMistakes-C4wTwGiG.js

1import{j as e,L as n,H as c,h as d,a as m,F as u}from"./index-CbvCveKN.js";import{A as h}from"./ArticleMeta-xcFkOt5B.js";import{G as p}from"./GuideArticle-DKwmJI-y.js";import"./ReviewArticle-B6ttacL3.js";import"./format-Caq5j0OG.js";import"./triangle-alert-BJBV5PBt.js";import"./info-BV9W_U4B.js";import"./pricing-CveG69c_.js";import"./arrow-right-dw9dfM3J.js";const t=({to:l,children:r})=>e.jsx(n,{to:l,style:{color:"#f26a1b"},children:r}),s={crumb:"TECHNICAL",readMinutes:10,h1:["Common load calculation mistakes","HVAC contractors make."],dek:"Even experienced contractors make these load calculation errors. Here's how to spot them, fix them, and avoid them on your next job: ten mistakes, a real-world example of each, and the fix.",author:{initials:"TP",name:"Travis Paivarinta",role:"Founder, EstimateKit"},published:"FEB 24, 2025",updated:"SEP 23, 2026",glance:[{k:"MISTAKES COVERED",v:"10",s:"with the fix for each"},{k:"DUCT LOSSES",v:"15–30%",s:"unsealed, unconditioned space"},{k:"AT 7,000 FT",v:"~78%",s:"of sea-level capacity"},{k:"SANITY RANGE",v:"400–700",s:"sq ft per ton, residential"}],tocLabel:"IN THIS GUIDE",aside:{label:"QUICK SIZING CHECK",copy:e.jsxs(e.Fragment,{children:["The free ",e.jsx(n,{to:"/hvac-load-calculator",style:{color:"#f26a1b"},children:"HVAC load calculator"})," is a fast sanity check against your Manual J. Then quote the job in EstimateKit, ",e.jsx("span",{className:"ek-mono",children:"$49"}),"/mo."]}),button:"Try EstimateKit free for 14 days →"},intro:[{t:"callout",label:"WHAT CUSTOMERS SAY",body:e.jsx(e.Fragment,{children:`"The system runs great... it just doesn't keep up on hot days." "It cools fine, but the humidity is terrible." "The new unit cycles on and off constantly."`})},{t:"p",body:e.jsx(e.Fragment,{children:"These are all symptoms of load calculation mistakes. The equipment works perfectly; it's just the wrong size for the application."})},{t:"p",body:e.jsx(e.Fragment,{children:"Load calculation errors cost contractors thousands in callbacks, warranty claims, and lost reputation. Most aren't dramatic. They're subtle mistakes that compound into big problems. This guide covers the 10 most common load calculation mistakes and how to avoid them."})},{t:"callout",label:"THE PATTERN",body:e.jsx(e.Fragment,{children:"Most sizing mistakes aren't from bad calculations. They're from skipping calculations entirely and using rules of thumb that don't apply."})}],sections:[{id:"mistake-1-square-footage-only",num:"01",title:"MISTAKE #1: SQUARE FOOTAGE ONLY",toc:"Mistake #1: using square footage only",h2:["Mistake #1:","using square footage only."],blocks:[{t:"callout",label:"THE MISTAKE",body:e.jsx(e.Fragment,{children:`"It's 1,800 sq ft, so I'll install a 3-ton system." (Using the 600 sq ft per ton rule.)`})},{t:"list",label:"WHY IT'S WRONG: SQUARE FOOTAGE IGNORES",items:["Insulation levels (R-13 walls vs R-30)","Window quantity and quality (single pane vs triple)","Window orientation (south and west = high solar gain)","Ceiling height (8 ft vs 12 ft = 50% more volume)","Home construction (tight vs leaky)","Climate zone (Phoenix vs Seattle)","Duct location (conditioned vs attic)"]},{t:"twoKv",cols:[{label:"HOME A · OLDER, 1,800 SQ FT",rows:[{k:"Walls",v:"R-11, poor"},{k:"Windows",v:"Single-pane"},{k:"South-facing windows",v:"12"},{k:"Ducts",v:"Attic, unsealed"},{k:"Actual load",v:"4 tons"}]},{label:"HOME B · NEWER, 1,800 SQ FT",rows:[{k:"Walls",v:"R-30, good"},{k:"Windows",v:"Double-pane low-E"},{k:"West exposure",v:"Minimal"},{k:"Ducts",v:"Sealed, conditioned space"},{k:"Actual load",v:"2.5 tons"}]}]},{t:"p",body:e.jsx(e.Fragment,{children:"Two homes in the same neighborhood. Same square footage, 60% difference in load."})},{t:"p",body:e.jsxs(e.Fragment,{children:["The fix: use actual Manual J calculations or ",e.jsx(t,{to:"/blog/best-hvac-estimating-software-2026",children:"estimating software"})," alongside a load calculator. At minimum, account for insulation levels, count and measure windows, note orientation and shading, and consider construction quality. The free ",e.jsx(t,{to:"/hvac-load-calculator",children:"HVAC load calculator"})," weighs those variables for a quick check."]})}]},{id:"mistake-2-matching-old-equipment",num:"02",title:"MISTAKE #2: MATCHING OLD EQUIPMENT",toc:"Mistake #2: matching existing equipment size",h2:["Mistake #2:","matching existing equipment size."],blocks:[{t:"callout",label:"THE MISTAKE",body:e.jsx(e.Fragment,{children:'"Old system was 4 tons, so new system should be 4 tons."'})},{t:"list",label:"WHY IT'S WRONG: THE OLD SYSTEM WAS PROBABLY OVERSIZED",items:['Original installer oversized "to be safe"',"Equipment came in limited sizes (no 2.5 or 3.5 ton available)","Home has been upgraded since (new windows, insulation)","Building codes have tightened (better construction)","Customer added shade trees or awnings","Old system never worked well (short cycling, humidity issues)"]},{t:"p",body:e.jsx(e.Fragment,{children:"Oversized existing equipment is common on replacement jobs, so the old nameplate is not a benchmark."})},{t:"defs",label:"REAL-WORLD EXAMPLE",rows:[{t:"Customer complaint",d:`"Old 4-ton system couldn't keep up."`},{t:"Investigation revealed",d:"The system WAS keeping up on temperature, but cycling on and off every 5-

17 minutes. It never ran long enough to dehumidify, so the home felt clammy and uncomfortable."},{t:"Proper load calc",d:"3 tons needed."},{t:"Result",d:"The new 3-ton system runs longer cycles, maintains better humidity, and the customer is happy."}]},{t:"p",body:e.jsx(e.Fragment,{children:"The fix: always calculate fresh, even on replacements. If the calculated size is significantly different from the existing one, explain why to the customer."})}]},{id:"mistake-3-ignoring-ductwork-losses",num:"03",title:"MISTAKE #3: DUCTWORK LOSSES",toc:"Mistake #3: ignoring ductwork losses",h2:["Mistake #3:","ignoring ductwork losses."],blocks:[{t:"defs",label:"THE MISTAKE: FORGETTING DUCTS LOSE CAPACITY THROUGH",rows:[{t:"Air leakage",d:"Unsealed joints leak 15-30%."},{t:"Heat transfer",d:"Ducts in a hot attic or cold crawlspace."},{t:"Poor insulation",d:"Inadequate duct wrap."}]},{t:"p",body:e.jsxs(e.Fragment,{children:["Why it's wrong: ductwork in unconditioned space loses significant capacity. For proper ",e.jsx(t,{to:"/blog/hvac-ductwork-estimation-cfm-calculations",children:"ductwork estimation"}),", always account for these losses: attic ducts in a hot climate, 20-30% loss typical; crawlspace ducts, 15-20%; garage ducts, 25-35%. A 3-ton system with 25% duct loss delivers only 2.25 tons to the home."]})},{t:"receipt",title:"Real-world example: attic ducts at 130°F",lines:[{k:"Load calculation",v:"30,000 BTU needed"},{k:"Equipment selected: 3 tons",v:"36,000 BTU"},{k:"Poorly insulated attic ductwork loses 30%",v:"−10,800 BTU"}],total:"25,200 BTU",margin:"actual cooling delivered: undersized, can't keep up on hot days"},{t:"kv",label:"THE FIX: ALWAYS ADD A DUCT LOSS FACTOR",rows:[{k:"Well-sealed ducts in conditioned space",v:"5-10%"},{k:"Typical attic or crawl installation",v:"15-20%"},{k:"Poor or aged ductwork",v:"25-35%"}],note:e.jsx(e.Fragment,{children:"Better yet: seal and insulate ducts properly to minimize losses."})},{t:"table",label:"DUCT LOSS MULTIPLIERS",head:["DUCT LOCATION","CONDITION","TYPICAL LOSS","MULTIPLIER"],hot:3,minWidth:520,rows:[["Conditioned space","Well-sealed","5-10%","× 1.08"],["Attic (insulated)","Sealed, R-8 wrap","15-20%","× 1.18"],["Attic (standard)","Typical install","20-30%","× 1.25"],["Attic (poor)","Old, unsealed","30-40%","× 1.35"],["Crawlspace","Typical","15-25%","× 1.20"]]},{t:"p",body:e.jsx(e.Fragment,{children:"Apply the multiplier to the calculated load to account for duct losses."})}]},{id:"mistake-4-wrong-design-temps",num:"04",title:"MISTAKE #4: DESIGN TEMPERATURES",toc:"Mistake #4: wrong design temperatures",h2:["Mistake #4:","wrong design temperatures."],blocks:[{t:"callout",label:"THE MISTAKE",body:e.jsx(e.Fragment,{children:'Using generic design temperatures instead of local data: "I always use 95°F for cooling" (when the local peak is 100°F), or "I use 20°F for heating" (when the local winter design is 5°F).'})},{t:"p",body:e.jsxs(e.Fragment,{children:["Why it's wrong: design temperatures vary significantly by location and elevation. For a complete overview, see our ",e.jsx(t,{to:"/blog/manual-j-load-calculations-simplified-hvac",children:"Manual J calculations"})," guide."]})},{t:"cells",columns:3,cells:[{top:"PHOENIX, AZ",main:"108°F",sub:"cooling design"},{top:"SEATTLE, WA",main:"84°F",sub:"cooling design"},{top:"SAME 3-TON SYSTEM",main:"Different",sub:"outcomes",hot:"main"}],note:e.jsx(e.Fragment,{children:"Too low a design temp gives an undersized system that can't keep up. Too high gives an oversized system that short-cycles."})},{t:"list",label:"HOW TO FIND CORRECT DESIGN TEMPS: ASHRAE DATA (99% AND 1% CONDITIONS)",items:["Available in Manual J software","Free from weather.gov","Listed by zip code","Use 99% values (hottest and coldest 1% of hours)"]},{t:"p",body:e.jsx(e.Fragment,{children:"The fix: look up actual design temps for the specific location. Don't guess, don't use state averages. Use the exact data for that zip code."})}]},{id:"mistake-5-forgetting-altitude",num:"05",title:"MISTAKE #5: ALTITUDE",toc:"Mistake #5: forgetting altitude adjustments",h2:["Mistake #5:","forgetting altitude adjustments."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: not adjusting for altitude in mountainous regions."})},{t:"defs",label:"WHY IT'S WRONG: EQUIPMENT LOSES CAPACITY AT ALTITUDE",rows:[{t:"Lower air density",d:"Less heat transfer."}

1,{t:"Compressor works harder",d:"Reduced efficiency."},{t:"Standard ratings",d:"Are at sea level."}]},{t:"cells",columns:4,label:"CAPACITY BY ALTITUDE (SEA LEVEL = 100%)",cells:[{top:"3,000 FT",main:"~92%"},{top:"5,000 FT",main:"~85%"},{top:"7,000 FT",main:"~78%",hot:"main"},{top:"10,000 FT",main:"~70%"}]},{t:"receipt",title:"Real-world example: 3-ton system at 7,000 ft",lines:[{k:"3-ton system at sea level",v:"36,000 BTU"},{k:"Same system at 7,000 ft (22% loss)",v:"28,000 BTU"},{k:"Load calculation",v:"30,000 BTU needed"}],total:"28,000 BTU",margin:"actual capacity at altitude: undersized"},{t:"list",label:"THE FIX: APPLY AN ALTITUDE DERATING FACTOR",items:["Calculate the load normally","Increase equipment size by the altitude factor","Or use Manual J software with altitude input","Verify manufacturer altitude ratings"]},{t:"p",body:e.jsx(e.Fragment,{children:"Most contractors in mountain areas learn this the hard way once, then never forget."})}]},{id:"mistake-6-ignoring-orientation",num:"06",title:"MISTAKE #6: WINDOW ORIENTATION",toc:"Mistake #6: ignoring window orientation",h2:["Mistake #6:","ignoring window orientation."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: treating all windows the same regardless of the direction they face."})},{t:"cells",columns:4,label:"SOLAR HEAT GAIN BY ORIENTATION",cells:[{top:"NORTH",main:"0.5×",sub:"minimal sun"},{top:"SOUTH",main:"1.0×",sub:"moderate gain"},{top:"EAST",main:"2.5×",sub:"morning sun"},{top:"WEST",main:"3.5×",sub:"afternoon sun, hottest",hot:"main"}],note:e.jsx(e.Fragment,{children:"Same-size window, 7x difference in cooling load between west and north."})},{t:"twoKv",cols:[{label:"NORTH-FACING BEDROOM",rows:[{k:"Size",v:"200 sq ft"},{k:"Windows",v:"Two 3'×4', double-pane"},{k:"Airflow needed",v:"180 CFM"}]},{label:"WEST-FACING BEDROOM",rows:[{k:"Size",v:"200 sq ft"},{k:"Windows",v:"Two 3'×4', double-pane"},{k:"Airflow needed",v:"280 CFM"}]}]},{t:"p",body:e.jsx(e.Fragment,{children:"Two identical bedrooms: a 55% difference due to solar gain alone."})},{t:"kv",label:"THE FIX: INPUT ORIENTATION IN MANUAL J SOFTWARE. QUICK RULE OF THUMB:",rows:[{k:"West-facing rooms",v:"Add 20% capacity"},{k:"South-facing rooms",v:"Add 10%"},{k:"East-facing rooms",v:"Standard"},{k:"North-facing rooms",v:"Reduce 10%"}]}]},{id:"mistake-7-not-accounting-for-upgrades",num:"07",title:"MISTAKE #7: HOME IMPROVEMENTS",toc:"Mistake #7: not accounting for home improvements",h2:["Mistake #7:","not accounting for home improvements."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: using original construction specs when the home has been upgraded."})},{t:"kv",label:"WHY IT'S WRONG: UPGRADES THAT REDUCE LOAD",rows:[{k:"New windows (single → double pane)",v:"30-40% reduction"},{k:"Added insulation (R-11 → R-30 walls)",v:"25-35% reduction"},{k:"Air sealing (blower door test)",v:"15-25% reduction"},{k:"Radiant barrier in attic",v:"10-15% reduction"},{k:"Shade trees planted",v:"5-10% reduction"}],note:e.jsx(e.Fragment,{children:"A home upgraded in all these ways might need 50-60% less cooling than the original calculation."})},{t:"defs",label:"REAL-WORLD EXAMPLE: 1985 HOME, ORIGINAL 4-TON SYSTEM",rows:[{t:"Homeowner upgrades (2020-2024)",d:"New triple-pane windows, spray foam insulation (walls and attic), LED lighting (less internal heat), shade trees matured."},{t:"Contractor quotes",d:"A 4-ton replacement (matching old)."},{t:"Actual load after upgrades",d:"2.5 tons."},{t:"Result",d:"60% oversized, terrible humidity control, customer unhappy."}]},{t:"list",label:"THE FIX: ALWAYS ASK ABOUT RECENT IMPROVEMENTS",items:["New windows in the last 10 years?","Added insulation?","Air sealing work?","New roofing with radiant barrier?","Landscaping changes?"]},{t:"callout",label:"CRITICAL WARNING",body:e.jsx(e.Fragment,{children:`The most expensive load calculation mistake is oversizing "to be safe." A 20% oversized system costs more upfront, wastes energy, provides poor comfort, and fails earlier. You're not being safe; you're creating problems. Better approach: size accurately and explain system limitations honestly (it can't maintain 68°F when it's 110°F outside).`})}]},{id:"mistake-8-internal-loads",num:"08",title:"MISTAKE #8: INTERNAL LOADS",toc:"Mistake #8: wrong internal load assumptions",h2:["Mistake #8:","wrong internal load assumptions."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: using standard assumptions for non-standard situations. Standard assumptions are 2-4 occupants, normal appli

1ances, typical lighting, and standard usage patterns."})},{t:"kv",label:"NON-STANDARD SITUATIONS",rows:[{k:"Home offices (computers, monitors, printers)",v:"+500-1,000 BTU"},{k:"Home gyms (equipment, people working out)",v:"+800-1,500 BTU"},{k:"Home theaters (projector, AV, multiple people)",v:"+300-600 BTU"},{k:"Server rooms (depending on equipment)",v:"+2,000-5,000 BTU"},{k:"Home businesses (varies by type)",v:"+500-2,000 BTU"},{k:"Large families",v:"+200 BTU per additional person"}]},{t:"list",label:"THE FIX: ASK ABOUT HOME USE",items:["Work from home? How many people, what equipment?","Exercise equipment?","Hobby rooms (woodworking, crafts)?","Home business?"]}]},{id:"mistake-9-infiltration-errors",num:"09",title:"MISTAKE #9: INFILTRATION",toc:"Mistake #9: infiltration rate errors",h2:["Mistake #9:","infiltration rate errors."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: using default infiltration rates without considering actual home tightness."})},{t:"twoKv",cols:[{label:"WHY IT'S WRONG: INFILTRATION VARIES WILDLY",rows:[{k:"New tight homes",v:"0.15-0.30 ACH"},{k:"Standard homes",v:"0.30-0.50 ACH"},{k:"Older homes",v:"0.50-1.00 ACH"},{k:"Very old / leaky",v:"1.00-2.00+ ACH"}]},{label:"THE FIX: ADJUST ASSUMPTIONS",rows:[{k:"New construction (post-2010)",v:"0.25-0.35 ACH"},{k:"Standard homes (1980-2010)",v:"0.35-0.50 ACH"},{k:"Older homes (pre-1980)",v:"0.50-0.80 ACH"},{k:"Very old / poor condition",v:"0.80-1.20 ACH"}]}]},{t:"p",body:e.jsx(e.Fragment,{children:"ACH is air changes per hour. Impact on load: a leaky home (1.0 ACH) vs a tight home (0.25 ACH) of the same size shows a 30-40% difference in infiltration load."})}]},{id:"mistake-10-no-reality-check",num:"10",title:"MISTAKE #10: NO SANITY CHECK",toc:"Mistake #10: no sanity check",h2:["Mistake #10:","no sanity check."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The mistake: accepting calculation results without questioning whether they make sense."})},{t:"list",label:"WHY IT'S WRONG: SOFTWARE CAN HAVE INPUT ERRORS",items:["Typo in square footage (1,800 entered as 18,000)","Wrong insulation value selected","Incorrect climate zone","Forgot to include the second floor"]},{t:"p",body:e.jsx(e.Fragment,{children:"Garbage in, garbage out."})},{t:"kv",label:"THE FIX: SANITY CHECK AGAINST TYPICAL RESIDENTIAL RANGES",rows:[{k:"Overall (depending on climate and efficiency)",v:"400-700 sq ft per ton"},{k:"Hot climate, poor insulation",v:"400-500 sq ft/ton"},{k:"Moderate climate, good insulation",v:"550-700 sq ft/ton"}]},{t:"list",label:"RED FLAGS",items:["Load more than 2x or less than 0.5x the existing system","Tons per square foot way outside the typical range","Room loads that don't make sense (bathroom bigger than living room)","Heating and cooling loads way out of proportion"]},{t:"p",body:e.jsxs(e.Fragment,{children:["The free ",e.jsx(t,{to:"/ac-tonnage-calculator",children:"AC tonnage calculator"})," is a quick second opinion on the number."]})}]},{id:"conclusion",num:"11",title:"AVOIDING THE MISTAKES",toc:"Avoiding load calculation mistakes",h2:["Avoiding load calculation mistakes.","Ten habits."],blocks:[{t:"p",body:e.jsx(e.Fragment,{children:"The common thread in all these mistakes: taking shortcuts or making assumptions without verification."})},{t:"list",label:"BEST PRACTICES TO AVOID ERRORS",numbered:!0,items:["Use Manual J software (reduces calculation errors)","Collect accurate data (measure, don't guess)","Ask about improvements (upgrades reduce load)","Account for duct losses (always add 15-25%)","Use local design temps (not state averages)","Consider orientation (west windows ≠ north windows)","Adjust for altitude (if above 2,000 ft)","Note unusual uses (home office

1s, gyms)","Sanity check results (does this make sense?)","Document assumptions (explain to the customer)"]},{t:"p",body:e.jsx(e.Fragment,{children:"The goal: size equipment that performs well 99% of the time, runs efficiently, and keeps customers comfortable. Perfect calculations don't exist, but avoiding these 10 mistakes gets you close enough that systems work properly."})},{t:"p",body:e.jsxs(e.Fragment,{children:["Learn the complete process in ",e.jsx(t,{to:"/blog/manual-j-load-calculations-simplified-hvac",children:"Manual J load calculations simplified"}),", and the pricing side in ",e.jsx(t,{to:"/blog/hvac-estimating-mistakes",children:"7 HVAC estimating mistakes"})," and the ",e.jsx(t,{to:"/blog/complete-hvac-estimating-guide",children:"complete HVAC estimating guide"}),"."]})}]}],faqTitle:"FREQUENTLY ASKED QUESTIONS",faqPosition:11,faqs:[{question:"What is the most common HVAC load calculation mistake?",answer:"Sizing by square footage alone. Two 1,800 sq ft homes can need 2.5 tons and 4 tons depending on insulation, windows, orientation and duct location."},{question:"Should I match the size of the old system?",answer:"No. The old system was often oversized, or the home has been upgraded since. Calculate fresh on every replacement and explain any difference to the customer."},{question:"How much should I add for duct losses?",answer:"About 5-10% for well-sealed ducts in conditioned space, 15-20% for a typical attic or crawlspace installation, and 25-35% for poor or aged ductwork."},{question:"How do I sanity check a load calculation?",answer:"Typical residential loads fall at 400-700 sq ft per ton. Be suspicious of a load more than 2x or less than 0.5x the existing system, or room loads that don't make sense."}],cta:{label:"TRY ESTIMATEKIT FREE FOR 14 DAYS",h2:["Get the size right.","Then send the quote the same day."],body:"Once the load is settled, EstimateKit builds the quote from your price book with good-better-best options, and the customer approves and e-signs online. Works offline on your phone. $49/month for your whole team.",button:"Start free trial →",note:"$49/month for your whole team · 14-day free trial · Cancel anytime",points:["Good-better-best options on every estimate","Your price book and markups built in","Customer approves online and can e-sign","Customer equipment records on file for the next visit","Up to 25 team members included"]},related:{label:"RELATED ARTICLES",intro:"The full Manual J process, the quick calculator, and pricing the job.",items:[{title:"Manual J Load Calculations Simplified",dek:"The step-by-step process these mistakes break.",to:"/blog/manual-j-load-calculations-simplified-hvac"},{title:"HVAC Load Calculator",dek:"Free block-load estimate for a quick sanity check.",to:"/hvac-load-calculator"},{title:"How to Price HVAC Jobs in 2026",dek:"Turn the right-sized system into a profitable quote.",to:"/blog/how-to-price-hvac-jobs-complete-guide-2026"}]}},o="https://estimatekit.com/blog/common-hvac-load-calculation-mistakes",g="Common Load Calculation Mistakes HVAC Contractors Make (And How to Fix Them)",i="Avoid the most common HVAC load calculation mistakes. Learn what causes oversized systems, undersized equipment, and uncomfortable customers.",a="https://estimatekit.com/og/blog/common-hvac-load-calculation-mistakes.jpg",S=()=>e.jsxs(e.Fragment,{children:[e.jsxs(c,{children:[e.jsx("title",{children:g}),e.jsx("meta",{name:"description",content:i}),e.jsx("meta",{name:"keywords",content:"hvac load calculation mistakes, load calculation errors, common hvac sizing mistakes, oversized hvac system"}),e.jsx("link",{rel:"canonical",href:o}),e.jsx("meta",{property:"og:title",content:"Common Load Calculation Mistakes HVAC Contractors Make"}),e.jsx("meta",{property:"og:description",content:"The biggest load calculation mistakes and how to avoid them. Essential reading for HVAC contractors."}),e.jsx("meta",{property:"og:url",content:o}),e.jsx("meta",{property:"og:type",content:"article"}),e.jsx("meta",{property:"og:image",content:a}),e.jsx("meta",{property:"og:site_name",content:"EstimateKit"}),e.jsx("meta",{name:"twitter:card",content:"summary_large_image"}),e.jsx("meta",{name:"twitter:title",content:"Common HVAC Load Calculation Mistakes"}),e.jsx("meta",{name:"twitter:description",content:"Avoid these critical sizing errors"}),e.jsx("meta",{name:"twitter:image",content:a}),e.jsx("script",{type:"application/ld+json",children:JSON.stringify(d(s.faqs))})]}),e.jsx(h,{title:"Common Load Calculation Mistakes HVAC Contractors Make",description:i,url:o,publishedISO:"2025-02-24",updatedISO:"2026-09-23",image:a}),e.jsxs("div",{className:"min-h-screen bg-[#07090d]",children:[e.jsx(m,{}),e.jsx(p,{d:s}),e.jsx(u,{})]})]});

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