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.
PROMPTS
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
PRO TIPS
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.
Tested Feb 15, 2026
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
PRO TIPS
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.
Tested Feb 15, 2026
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)
PRO TIPS
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.
Tested Feb 15, 2026
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
PRO TIPS
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.
Tested Feb 15, 2026
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
PRO TIPS
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.
Tested Feb 15, 2026
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
PRO TIPS
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.
Tested Feb 15, 2026
Based on actual testing — not assumptions. See our methodology
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, 2026ChatGPT
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, 2026Claude
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, 2026Grok
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, 2026Always 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.
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.
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.