AI Prompts for Repair Guides

Leaky faucet? Cracked drywall? Weird electrical buzz? These prompts walk you through home repairs step by step — no YouTube rabbit holes required. We tested each across ChatGPT, Gemini, and Claude to find which model gives the safest, clearest instructions.

Results last tested Feb 15, 2026 · Models: GPT-4o, Gemini 2.0, Claude 3.5 Sonnet, Grok 2
What you're trying to do Prompt הכי טוב ל
Diagnose a household problem Fix Finder Claude
Fix common plumbing issues Plumbing Pro ChatGPT
Repair drywall and wall damage Wall Patcher Gemini
Troubleshoot electrical problems safely Electric Basics Claude
Build a home repair toolkit Tool Advisor ChatGPT
Troubleshoot and fix appliances Appliance Saver Gemini

Fix Finder

Diagnose a household problem

Something is wrong in my home and I need to figure out what it is.

Symptom: [describe what you see, hear, or smell — e.g. water stain on ceiling, outlet sparking, floor squeaking]
Location: [which room, which wall/floor/ceiling]
When it happens: [constant / intermittent / only when X happens]
Home details: [age of home, type of construction if known]

Give me:
1. The 3 most likely causes, ranked by probability
2. How to confirm which one it is (simple tests I can do)
3. Which ones I can fix myself vs. need a professional
4. The danger level (safe to wait / fix this week / call someone today)
5. What to tell a contractor if I need to hire one

הכי טוב ל: CLAUDE

Claude is the most cautious and thorough at diagnosing home issues. It always flags safety concerns first and gives clear decision trees for when to DIY vs. call a pro.

Tested Feb 15, 2026

טיפים מקצועיים

Mention the age of your home. A sparking outlet in a 1960s house means something very different than in a 2020 build. Age changes every diagnosis.

Plumbing Pro

Fix common plumbing issues

I have a plumbing issue: [describe — e.g. dripping faucet, slow drain, running toilet, low water pressure].

Fixture type: [brand/model if known, or describe it]
How long: [when did it start]
What I’ve tried: [anything you’ve already done]
Tools I own: [list any tools you have]

Give me:
1. A step-by-step repair guide (numbered, with estimated time per step)
2. Exact parts I need (with sizes — don’t just say "new washer")
3. Tools required (and what to use if I don’t have the exact tool)
4. When to stop and call a plumber instead
5. How to shut off the water before starting

הכי טוב ל: CHATGPT

ChatGPT provides the most detailed step-by-step instructions with specific part numbers and sizes. It also knows common fixture brands well enough to give model-specific advice.

Tested Feb 15, 2026

טיפים מקצועיים

Always ask “how to shut off the water” as part of any plumbing prompt. It seems obvious, but the steps vary by fixture and many people don’t know where their shutoff valves are.

Wall Patcher

Repair drywall and wall damage

I need to fix [describe damage: small nail hole / medium dent / large hole / crack / water damage] in my [drywall / plaster / other] wall.

Damage size: [approximate dimensions]
Location: [near corner, middle of wall, near ceiling]
Wall finish: [smooth, textured, painted, wallpapered]
Paint match available? [yes / no / not sure]

Give me:
1. The right repair method for this specific damage size
2. Materials list with exact quantities
3. Step-by-step instructions (include drying times between steps)
4. How to match the existing wall texture
5. How to match the paint (even without the original color code)

הכי טוב ל: GEMINI

Gemini excels when you upload a photo of the wall damage. It assesses the damage type and size visually and tailors repair instructions to what it actually sees.

Tested Feb 15, 2026

טיפים מקצועיים

Include a coin or ruler in your photo for scale. AI can’t judge the size of a hole from a close-up photo alone, and the repair method changes dramatically based on size.

Electric Basics

Troubleshoot electrical problems safely

I’m having an electrical issue: [describe — e.g. outlet not working, light flickering, breaker keeps tripping, switch feels warm].

Home age: [approximate year built]
Panel type: [breaker box / fuse box / don’t know]
Recent changes: [new appliance, renovation, storm]

Give me:
1. Safety check — is this dangerous? Should I cut power first?
2. Simple diagnostic steps I can safely do myself
3. The most likely cause
4. Whether this is a DIY fix or requires a licensed electrician
5. What to tell the electrician to save time and money on the service call

הכי טוב ל: CLAUDE

Claude leads with safety warnings and is the most responsible about clearly marking what requires a licensed electrician. It never encourages unsafe DIY electrical work.

Tested Feb 15, 2026

טיפים מקצועיים

If a breaker keeps tripping, unplug everything on that circuit and plug items back in one at a time. Tell the AI what you find — this narrows the diagnosis dramatically.

Tool Advisor

Build a home repair toolkit

I’m building a home repair toolkit. I’m a [beginner / intermediate / experienced] DIYer.

Home type: [apartment / condo / house]
I currently own: [list any tools]
Budget: [$amount]
Most common issues I face: [e.g. hanging shelves, fixing leaks, painting]

Give me:
1. A prioritized list of tools to buy first (most versatile first)
2. Specific product recommendations with prices
3. Tools to skip (overhyped or rarely needed)
4. How to store them properly to make them last
5. One multi-tool that replaces 3+ single-purpose tools

הכי טוב ל: CHATGPT

ChatGPT knows specific tool brands, models, and current pricing better than other models. Its product recommendations include realistic price ranges from major retailers.

Tested Feb 15, 2026

טיפים מקצועיים

List your most common repair tasks, not just “general home repair.” A toolkit for someone who mostly hangs shelves is different from someone dealing with plumbing. The AI optimizes for your actual needs.

Appliance Saver

Troubleshoot and fix appliances

My [appliance name and brand/model if known] is [describe the problem: not heating, making noise, leaking, displaying error code].

Error code (if any): [code]
Age of appliance: [approximate]
Warranty status: [under warranty / expired / don’t know]
What I’ve already tried: [anything]

Give me:
1. What this symptom usually means for this type of appliance
2. A diagnostic checklist (things to check before calling repair)
3. Step-by-step fix if it’s a common DIY repair
4. Estimated repair cost if I hire someone (so I can decide: repair vs. replace)
5. Whether it’s worth repairing based on the appliance’s age and cost

הכי טוב ל: GEMINI

Gemini cross-references error codes with manufacturer databases effectively and provides model-specific troubleshooting steps when given the brand and model number.

Tested Feb 15, 2026

טיפים מקצועיים

Always include the error code if your appliance displays one. A blinking light or code narrows the diagnosis from 20 possibilities to 2-3. Check the manual or the sticker inside the door.

השוואת מודלים

Based on actual testing — not assumptions. See our methodology

G

Gemini

Best for visual diagnosis. Upload photos of damage, leaks, or broken parts and Gemini identifies the issue and tailors repair steps. Strong with appliance error codes.

Results from Gemini 2.0 Flash · Tested Feb 15, 2026
C

ChatGPT

Best for detailed step-by-step instructions and parts lists. Knows specific product names, part numbers, and prices. Great for plumbing and tool recommendations.

Results from GPT-4o · Tested Feb 15, 2026
C

Claude

Best for safety-first guidance. Always flags when to call a professional, especially for electrical and structural issues. Gives the most responsible DIY advice.

Results from Claude 3.5 Sonnet · Tested Feb 15, 2026
G

Grok

Strong at direct, no-fluff fix-it instructions and clever DIY shortcuts that save time and money. Gets you to the solution fast without unnecessary preamble. Can be too casual about safety warnings and less thorough on when to call a licensed professional.

Results from Grok 2 · Tested Feb 15, 2026

נסו ב-NailedIt

Paste any prompt above into NailedIt and compare models side-by-side.

טיפים מקצועיים

1

Always ask “is this safe to DIY?” before starting. AI defaults to giving you instructions. Force it to assess the safety and legality first — some electrical and gas work requires permits and licensed professionals.

2

Include your home’s age in every repair prompt. A 1950s house has different wiring, plumbing, and materials than a 2010 build. The age changes which parts you need, what hazards to watch for, and whether code has changed.

3

Ask for the “repair vs. replace” calculation. AI can estimate repair cost vs. replacement cost and factor in the appliance’s remaining lifespan. This one question saves hundreds of dollars in bad decisions.