---
name: green-home
description: |
  Comprehensive guide to creating a healthier, more sustainable home covering energy audit walkthroughs, non-toxic cleaning product recipes and alternatives, water conservation strategies for fixtures and landscaping, indoor air quality improvement, sustainable materials for renovation projects, and understanding green building certifications.
  Use when the user asks about green home, or needs help with comprehensive guide to creating a healthier, more sustainable home covering energy audit walkthroughs, non-toxic cleaning product recipes and alternatives, water conservation strategies for fixtures and landscaping, indoor air quality improvement, sustainable materials for renovation projects, and understanding green building certifications.
  Do NOT use when the request requires professional specialized advice or falls outside the scope of green home.
license: Apache-2.0
metadata:
  author: foundry-skills
  version: "1.0.0"
  tags: "sustainability energy-efficiency guide"
  category: "sustainability"
  subcategory: "sustainable-living"
  depends: ""
  disclaimer: "none"
  difficulty: "intermediate"
---

# Green Home Guide

## When to Use

**Use this skill when:**
- User asks about green home
- User needs guidance on green home topics
- User wants a structured approach to green home

**Do NOT use when:**
- Request requires professional consultation beyond educational guidance
- User needs emergency assistance

## Questions to Ask First

1. Do you own or rent your home (determines scope of possible changes)?
2. What type of home do you live in (house, apartment, condo, townhouse)?
3. What is your primary goal (reducing bills, improving health, environmental impact, all)?
4. What is your approximate monthly energy bill (electric and gas)?
5. What is your approximate monthly water bill?
6. When was your home built (affects insulation, materials, air quality considerations)?
7. Have you had any health concerns possibly related to your home (allergies, respiratory issues)?
8. What is your budget for green improvements?
9. Are you planning any renovations or major projects?
10. Which area is most important to you (energy, water, indoor air quality, materials, cleaning)?

---

## Phase 1: Home Energy Audit

### DIY Energy Audit Walkthrough

**Step 1: Insulation Assessment**

| Area | How to Check | Target R-Value (varies by climate) |
|------|-------------|----------------------------------|
| Attic | Measure insulation depth, check for gaps | R-38 to R-60 |
| Walls | Outlet test (turn off breaker, remove cover, look for insulation) | R-13 to R-21 |
| Basement or crawlspace | Visual inspection, touch test (cold equals poor insulation) | R-11 to R-25 |
| Floors over unheated spaces | Visual inspection from below | R-25 to R-30 |

**Step 2: Air Leak Detection**

Common air leak locations to check:
- [ ] Around windows and doors (feel for drafts, use incense to detect airflow)
- [ ] Electrical outlets and switch plates (especially on exterior walls)
- [ ] Plumbing and utility penetrations
- [ ] Recessed lights in insulated ceilings
- [ ] Attic hatch or pull-down stairs
- [ ] Fireplace damper
- [ ] Dryer vent
- [ ] Where siding meets foundation

**Step 3: HVAC Assessment**
- [ ] Age of system (15+ years likely needs replacement)
- [ ] When was the last professional maintenance?
- [ ] Filter condition and replacement schedule
- [ ] Ductwork inspection for visible leaks and disconnections
- [ ] Thermostat type (programmable or smart?)

**Step 4: Lighting and Appliance Assessment**
- [ ] Count remaining incandescent or halogen bulbs
- [ ] Identify opportunities for LED replacement
- [ ] Evaluate natural light usage
- [ ] Check appliance age and Energy Star ratings

### Professional Energy Audit
A professional audit costs $200-$500 and includes blower door testing, infrared thermal imaging, duct leakage testing, combustion safety testing, and a detailed report with prioritized recommendations. Many utilities subsidize or offer free audits.

---

## Phase 2: Energy Efficiency Improvements

### Priority Improvements by Cost and Impact

| Improvement | Cost | Annual Savings | Payback |
|-------------|------|---------------|---------|
| LED lighting throughout | $50-$200 | $75-$200 | Under 1 year |
| Air sealing (caulk, weatherstrip) | $50-$300 | $100-$300 | Under 1 year |
| Programmable or smart thermostat | $25-$250 | $100-$200 | 1-2 years |
| Attic insulation (add to existing) | $500-$2,000 | $200-$500 | 2-5 years |
| Water heater insulation blanket | $20-$40 | $30-$50 | Under 1 year |
| HVAC maintenance and tune-up | $100-$200 | $100-$200 | Under 1 year |
| Window film or cellular shades | $200-$1,000 | $100-$300 | 2-5 years |
| Energy Star appliance upgrades | $500-$2,000 each | Varies | 3-10 years |
| Heat pump HVAC | $5,000-$15,000 | $500-$2,000 | 5-15 years |
| Window replacement | $5,000-$20,000 | $200-$500 | 10-30 years |

### Smart Thermostat Settings

Heating season: Home and awake at 68 degrees F, sleeping at 62-65 degrees F, away at 60-62 degrees F.

Cooling season: Home and awake at 76-78 degrees F, sleeping at 72-76 degrees F, away at 82-85 degrees F.

Each degree of adjustment saves approximately 1-3% on heating and cooling costs.

---

## Phase 3: Non-Toxic Cleaning

### Why Switch to Non-Toxic Cleaning?
Conventional cleaners contain chemicals linked to respiratory issues, skin irritation, and endocrine disruption. Indoor air quality is often 2-5 times worse than outdoor air. Chemical residues remain on surfaces where children and pets make contact. Effective alternatives are often cheaper and simpler.

### DIY Cleaning Recipes

**All-Purpose Cleaner:** Combine 1 cup white vinegar, 1 cup water, and 10 drops tea tree or lemon essential oil (optional) in a spray bottle. Shake before use. Do not use on marble, granite, or natural stone.

**Glass Cleaner:** Combine 1 cup water, 1 cup white vinegar, and 1 tablespoon cornstarch (prevents streaking) in a spray bottle. Shake well before each use. Wipe with newspaper or lint-free cloth.

**Bathroom Scrub:** Mix 1 cup baking soda with enough liquid castile soap to make a paste and 10 drops tea tree essential oil. Apply, scrub, and rinse.

**Toilet Bowl Cleaner:** Sprinkle 1/2 cup baking soda in bowl, add 1/4 cup white vinegar, let fizz for 10 minutes, scrub with brush and flush.

**Laundry Booster:** Add 1/2 cup baking soda to the wash cycle for brightening, softening, and deodorizing.

### What to Avoid in Cleaning Products

| Ingredient | Concern | Found In |
|-----------|---------|----------|
| Phthalates | Endocrine disruption | Fragranced products |
| Chlorine bleach | Respiratory irritation | Disinfectants, bathroom cleaners |
| Ammonia | Respiratory irritation | Glass cleaners |
| "Fragrance" | Undisclosed chemicals, allergens | Almost everything scented |
| Formaldehyde | Carcinogen | Some disinfectants |
| Triclosan | Antimicrobial resistance | Antibacterial soaps |

### Commercial Non-Toxic Brands
Look for EPA Safer Choice label or EWG rating of A or B. Trusted brands include Seventh Generation, Branch Basics, Dr. Bronner's, Ecover, and ECOS.

---

## Phase 4: Water Conservation

### Indoor Water Conservation

| Strategy | Water Saved | Cost |
|----------|------------|------|
| Low-flow showerhead (2.0 GPM or less) | 20-40% per shower | $15-$50 |
| Faucet aerators (1.0-1.5 GPM) | 30-50% per faucet | $5-$10 each |
| Dual-flush or low-flow toilet | 20-60% per flush | $200-$400 |
| Fix leaking faucets and running toilets | Hundreds of gallons per month | $0-$50 |
| Full loads only (washer and dishwasher) | 15-45 gallons per avoided load | Free |
| Shorter showers (target 5 minutes) | 10-20 gallons per shower | Free |

### Outdoor Water Conservation

**Landscaping strategies:**
- Xeriscaping with drought-resistant native plants
- Mulch (2-4 inches) reduces evaporation by 25-50%
- Group plants by water needs
- Reduce lawn area
- Choose native grasses that need less water

**Irrigation improvements:**
- Drip irrigation (90-95% efficient vs 50-70% for sprinklers)
- Water early morning to reduce evaporation
- Install a smart irrigation controller that adjusts for weather
- Use rain sensors to prevent watering during rain

**Rainwater Harvesting:**
Rain barrels (50-100 gallon capacity) cost $50-$200. Connect to gutter downspouts and use for garden watering. One inch of rain on 1,000 sq ft of roof yields approximately 600 gallons. Check local regulations first.

---

## Phase 5: Indoor Air Quality

### Common Indoor Air Pollutants

| Pollutant | Sources | Health Effects |
|-----------|---------|---------------|
| VOCs | Paint, furniture, cleaning products, air fresheners | Headaches, respiratory irritation |
| Formaldehyde | Pressed wood products, insulation | Eye/nose/throat irritation, cancer risk |
| Mold and mildew | Moisture, poor ventilation, leaks | Allergies, asthma, respiratory infections |
| Radon | Soil beneath foundation | Lung cancer (second leading cause) |
| Carbon monoxide | Gas appliances, fireplaces | Headache, dizziness, death at high levels |
| Dust mites and dander | Carpets, bedding, upholstery | Allergies, asthma |

### Improving Indoor Air Quality

**Ventilation:**
- [ ] Open windows when weather and outdoor air quality permit
- [ ] Use exhaust fans when cooking and showering
- [ ] Ensure bathroom fans vent to the outside, not the attic
- [ ] Run kitchen range hood when cooking, especially with a gas stove

**Source Control:**
- [ ] Choose low-VOC or zero-VOC paints and finishes
- [ ] Avoid plug-in air fresheners and synthetic-fragrance candles
- [ ] Use fragrance-free cleaning products
- [ ] Remove shoes at the door
- [ ] Test for radon (kits available for $10-$30)
- [ ] Install and maintain CO detectors on every level

**Filtration:**
- [ ] Change HVAC filters regularly (every 1-3 months)
- [ ] Use MERV 11-13 filters for better particulate removal
- [ ] Consider a portable HEPA air purifier for bedrooms
- [ ] Vacuum with a HEPA-filter vacuum weekly

---

## Phase 6: Sustainable Materials for Renovation

### Material Selection Guide

| Material | Sustainable Options | What to Avoid |
|----------|-------------------|---------------|
| Flooring | Bamboo, cork, reclaimed wood, FSC-certified wood, natural linoleum | Virgin tropical hardwood, vinyl/PVC |
| Countertops | Recycled glass, reclaimed wood, recycled composites | Engineered stone with high-VOC resins |
| Cabinets | FSC-certified wood, reclaimed wood, formaldehyde-free plywood | Particleboard with urea-formaldehyde |
| Paint | Zero-VOC, natural clay paint, milk paint | Conventional high-VOC paints |
| Insulation | Cellulose, wool, cotton, mineral wool | Some spray foams |
| Roofing | Metal (recyclable, long-lasting), recycled rubber, clay tile | Asphalt shingles (short life) |
| Decking | FSC-certified wood, recycled composite, reclaimed wood | Pressure-treated wood, tropical hardwood |

### Certifications for Sustainable Building Materials
- FSC (Forest Stewardship Council): Sustainably harvested wood
- GREENGUARD: Low chemical emissions
- FloorScore: Low-emission flooring
- Cradle to Cradle: Material health and circularity
- Energy Star: Energy-efficient products

---

## Phase 7: Green Home Certifications

### Certification Programs

| Certification | What It Means | Cost to Certify |
|--------------|---------------|-----------------|
| Energy Star Home | Meets EPA efficiency standards (30%+ better than code) | Built into construction |
| LEED for Homes | Comprehensive green building standard | $2,000-$5,000+ |
| Passive House | Ultra-low energy standard (90% heating reduction) | Design and verification |
| HERS Rating | Home Energy Rating System (lower number equals more efficient) | $400-$800 |
| Pearl Certification | Home performance and value certification | $200-$500 |

### Understanding HERS Scores

The HERS Index uses a scale where 0 equals a net-zero energy home, 100 equals a standard code-built home, and 130 or higher is typical for existing older homes. Lower scores mean greater efficiency. Each 1-point reduction equals approximately 1% energy savings. Typical existing homes score 100-180, Energy Star homes score 60-80, and high-performance homes score 30-60.

---

## Green Home Action Plan

### Quick Wins (This Week)
- [ ] Switch remaining incandescent bulbs to LED
- [ ] Seal visible air leaks with caulk and weatherstripping
- [ ] Adjust thermostat by 2 degrees
- [ ] Install faucet aerators on all sinks
- [ ] Switch to a non-toxic all-purpose cleaner
- [ ] Fix any dripping faucets or running toilets
- [ ] Replace HVAC filter if overdue

### Medium-Term Improvements (1-6 Months)
- [ ] Conduct or schedule a professional energy audit
- [ ] Install a smart thermostat
- [ ] Test for radon
- [ ] Add attic insulation if below recommended levels
- [ ] Install low-flow showerheads
- [ ] Set up a rainwater collection barrel

### Long-Term Investments (6+ Months)
- [ ] Upgrade to Energy Star appliances as current ones need replacement
- [ ] Install solar panels
- [ ] Replace windows if single-pane or failing
- [ ] Upgrade HVAC to high-efficiency heat pump
- [ ] Use sustainable materials in any renovation projects

A green home is a journey, not a destination. Start with the changes that save the most energy and money for the least investment, and build from there.


## Output Format

```
GREEN HOME OUTPUT
=================

Section 1: Assessment / Analysis
- Key findings
- Recommendations

Section 2: Action Plan
- Step-by-step guidance
- Timeline if applicable

Section 3: Resources
- Relevant references
- Next steps
```

## Example

**Input:** "Help me get started with green home"

**Output:** A structured green home plan tailored to the user's specific situation, following the process outlined above.

## Edge Cases

- **Incomplete information:** Ask clarifying questions before proceeding. Do not assume details the user has not provided.
- **Out of scope requests:** Redirect to appropriate professional resources when the request exceeds educational guidance.
- **Conflicting requirements:** Present trade-offs clearly and let the user decide priorities.
